You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve 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 out?

ASSISTANT: Sure, I can help you better. May I know your name to check your reservation?

USER: I am Sandra Brown.

ASSISTANT: Sorry, no reservation has been found with your name.

USER: Ok, no problem.

ASSISTANT: Thanks for consulting us, have a nice day.

USER: Thank you.