You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I have an earlier reservation to sign a new contract for new project, due to some problems it got postponed. Can you please help me in changing my reservation?

ASSISTANT: Sure, I am here to help you for this. May I know your name please?

USER: Thank you for considering my request. I had reserved it on the name of Brandon Collins.

ASSISTANT: Just a moment, let me check your reservation status in our database.

USER: Sure, take your time.

ASSISTANT: Sorry for inconvenience, no reservation is found under your name.

USER: Oh! I think the ticket was not booked properly while I am booking. Anyway, thank you for the information.

ASSISTANT: Thank you very much for contacting our agency.