You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I have to cancel my flight ticket booking that I am unable to travel the trip which I have planned due to some important interview, can you help me in cancelling my flight ticket?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Let me know your name for checking the reservation.

USER: Christopher Clark is my name.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a reservation on your name and it is cancelled.

USER: Thank you.

ASSISTANT: Thank you for opting us.