You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kevin Johnson.

ASSISTANT: How can I help you?

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

ASSISTANT: Just a moment please.

USER: Sure, take your time.

ASSISTANT: I am sorry no reservation found on your name.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for choosing us.