Hi, this is John. I would like to organize a party
At what venue would you like to have your party organised?
I would like it West Bay, Sunday at 3pm. I think and afternoon party is best. It is for a work friend so I don't want it too crazy.
How many people would you like to invite?
about 50. All the water cooler people, you know how it goes. 
OK, the West Bay Venue would be happy to accommodate you on Sunday @ 3 pm.
Can I book it for you now?
Do you think I should invite the boss as well?
Is there anything else that I can do for you?
I don't want to ruin the chance of a promotion in the future. Bit I don't want to seem like a suck up. This is a tricky situation. 
Is there anything else that I can do for you?
Do they have alcohol there? It may lighten the mood
Great, your party has been successfully booked at the West Bay Venue on Sunday at 3 pm!
My coworker just sent me a message that she really likes Thai. Can we have Thai food at the party?
Great, your party has been successfully booked at the West Bay Venue on Sunday at 3 pm!
I think this is going to work  out fine. 
Thank you and goodbye.
bye
Thank you and goodbye.