You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid 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.

USER: Thank you.

ASSISTANT: May I know your name?

USER: Myself Patrick Jackson.

ASSISTANT: There is no reservation found under your name.

USER: It's ok, thank you for your help.

ASSISTANT: Thank you for choosing us.