You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Due to some financial issues, I would like to cancel my recent reservation. Please help me out.

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

USER: Thank you.

ASSISTANT: May I know your name please?

USER: My name is David Thompson.

ASSISTANT: Wait a moment please.

USER: Sure, take your time.

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

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for choosing us.