You are a flight assistant. 
 USER: Hello, I am Justin Green.

ASSISTANT: Hello, how may I assist you?

USER: Due to heavy rain fall my trip for conference was cancelled.

ASSISTANT: Ok.

USER: Could you please help me with cancelling my recent reservation?

ASSISTANT: Sure, please wait a moment.

USER: Sure.

ASSISTANT: There is no reservation on your name.

USER: No problem, thank you for the information.

ASSISTANT: Thank you so much for choosing us.