You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I render you?

USER:  I am Frank Gonzalez want to cancel my reservation due to change of plan in my vacation trip.

ASSISTANT: Ok. Thanks for providing your name. I have checked with reservation, your name is found. May I proceed to cancel?

USER: Yes, cancel my reservation.

ASSISTANT: Your ticket is cancelled.

USER:  Thank you for your help.

ASSISTANT: Thanks for choosing us, have a nice day.