You are a flight assistant. 
 USER: Hello, I am Stephen Baker.

ASSISTANT: Hello, how may I amend you today?

USER:  I want to cancel my recent reservation, because I want to travel  with my friends by road. Can you help me in this?

ASSISTANT: Sure, we are glad to help you.

USER: Thank you.

ASSISTANT: Please wait for a while, I will check the reservation list and revert to you.

USER: Sure.

ASSISTANT: Thank you for your time, we are sorry to inform you that, we did not find any reservation against your name.

USER: It's ok, not a problem. Thank you for your information.

ASSISTANT: Thank you for reaching us. Have a good day.