Hello
Your name  host name, day start time and number of guests
I'm John.  The party is for me. I want it on Tuesday at 11am. I'm expecting 54 people.
Venue
Southside
Hist
What?
Host
I am the host
OK, the Southside Venue would be happy to accommodate you on Sunday @ 11 am.
Can I book it for you now?
Yes, go ahead
Great, your party has been successfully booked at the Southside Venue on Sunday at 11 am!
No that's not right. I wanted it on Tuesday.
Tuesday is available 
Ok. Book it for Tuesday.
OK, the Southside Venue would be happy to accommodate you on Tuesday @ 11 am.
Can I book it for you now?
yes
Great, your party has been successfully booked at the Southside Venue on Tuesday at 11 am!