You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How may I assist you?

USER: Thomas Campbell is my name.

ASSISTANT: Thank you for providing your name.

USER: My wish to go for a Long Trips was postponed, so for that I want to cancel my reservation. Will you help me in this?

ASSISTANT: Sure, I am gleeful to assist you.

USER: Thank you.

ASSISTANT: Ok, hang on for a moment I will check the reservation list and get back to you with the status.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry to inform you that unfortunately there is no reservation found in your given name..

USER: Ok, no problem. Thank you for your assistance.

ASSISTANT: Thank you for reaching us.