You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

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

ASSISTANT: How may I help you out? Sure, I will help you in cancelling the reservation. May I know your name please?

USER: Sure, myself Frank Evans.

ASSISTANT: Sorry, there are no reservations found in our database.

USER: That's ok, no problem. Thank you for checking out.

ASSISTANT: Thank you for reaching us.