Hi,.
Hello,. May I know, For what kind of service you have visited us?
 I have made an reservation earlier, but now I need to made a few changes for that. As your agent misplaced the travel dates. Can you help me with changing my reservation?
 Sure, I can help you with our full and best services.
Thanks for considering my request.
 To change your ticket, we need your name to check your reservation status. Can you provide it?
Sure, please check it with my name Anthony Roberts.
Thanks for the name, please wait.
Sure, take your own time.
 You have waited for my response with patience. I will appreciate for that.
My pleasure.
Sorry to say that, we did not find any reservation with name Anthony Roberts, to change your reservation.
That's ok, I think I have reserved the ticket, in another airlines agency. Anyway, thanks for your effort in searching my reservation.
Thank you for visiting us. We hope you will visit again. Have a great day ahead!.