You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I would like to cancel my recent reservation, can you please help me?

ASSISTANT: Sure, I am here to help you out. May I know your name please?

USER: Carol Evans.

ASSISTANT: Wait a moment please.

USER: Sure.

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

USER: Ok, no worries at all. Thank you.

ASSISTANT: Thank you for choosing us.