You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What help that can I assess for you?

USER: I want to cancel my reservation, because my trip was cancel this month due to that I want to cancel my reservation, can you help me?

ASSISTANT: Yes, I will help you. On whose name the previous ticket booking is done?

USER: Thanks, my name is Timothy Lopez.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: I am sorry there is no ticket found to cancel your ticket booking.

USER: Oh! May be I am not booked my ticket properly at that time.

ASSISTANT: Have a nice day.

USER: Thank you for your information.

ASSISTANT: It's my pleasure.