You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Can you please help me in changing my recent reservation? As my planned trip has been postponed to some other dates.

ASSISTANT: Sure, may I know your name?

USER: Yes, my name is Amy Martinez.

ASSISTANT: Wait a minute.

USER: Sure, take your own time.

ASSISTANT: There was no reservation found on your name.

USER: That's ok, thank you for giving the information.