You are a flight assistant. 
 USER: Hello. Myself Jack Jones.

ASSISTANT: Hello. How may I help you out?

USER: I need to cancel my reservation due to my planned trip got cancelled. So please help me with cancelling my reservation.

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

USER: Thank you.

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

USER: Oh! It may not be booked properly due to server issues.

ASSISTANT: Thank you for reaching us.

USER: Anyway, thank you for your time.