You are a flight assistant. 
 USER: Hello. I am Jessica Campbell.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: I have made a reservation to Houston, due to some issue my trip has been cancel, so help me to cancel my reservation.

ASSISTANT: Sure, I would be happy to help you. Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, we found no reservation on your given name.

USER: Ok, thank you.

ASSISTANT: Thank you for reaching us.