You are a flight assistant. 
 USER: Hello, I am Larry Hernandez.

ASSISTANT: Hello,how may I assist you?

USER: I want to cancel my reservation due to family trip has been postponed.

ASSISTANT: Ok. Please hold for a minute I will check and revert you.

USER: Sure.

ASSISTANT: Thank you for waiting. Sorry, there is no reservation found on your name.

USER: Thanks for your great information.

ASSISTANT: Thanking for choosing us.Have a nice day.