You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What help that you are looking from my side?

USER: I am Dennis Lewis. I planned a trip to New York with my friend but my friend is sick, so I want to cancel my reservation.

ASSISTANT: Sure, I can cancel your ticket booking, please wait for a moment.

USER: Sure.

ASSISTANT: I could not found a previous booking done on the name that you have provided to cancel it. Thank you for reaching us.

USER: That's ok, thank you for your information.