You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER:  I want to cancel my recent reservation which I have done last week because my trip got cancelled. Please help me out with that.

ASSISTANT: Sure, I am here to help you out.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: Myself Catherine Hall.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: Catherine Hall, we haven't found any reservation under your name in our database.

USER: That's fine, thank you.

ASSISTANT: Thank you for reaching us.