You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I want to cancel my reservation, due to some problems I am unable to travel those dates so can you please cancel my reservation?

ASSISTANT: Yes, I am gleeful to help you.

USER: Thanks.

ASSISTANT: May I know you name please?

USER: Sure, my name is Timothy Lopez.

ASSISTANT: Please give me a moment to check you previous booking.

USER: Ok.

ASSISTANT: Thank you for waiting, I unable to proceed to you ticket cancellation that there is no ticket found on the name which you have provided.

USER: Oh! May be I am not booked my ticket properly at that time. Thank you for your information.

ASSISTANT: Most welcome.