You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to cancel my recent reservation, can you please help me out?

ASSISTANT: Sure, we are here to help you.

USER: Thanks.

ASSISTANT: May I know your name to proceed further?

USER: Sure, my name is David Taylor.

ASSISTANT: Please wait for a moment.

USER: Ok, take your time.

ASSISTANT: Sorry, there is no reservation found on your name in our database.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for opting us.