You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jack Jones.

ASSISTANT: How may I help you out ?

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

ASSISTANT: Sure, I will help you in cancelling the reservation.

USER: Thank you.

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

USER: That's ok, not a problem.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your information.