You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I help you?

USER: I am Gary Green . I like to cancel my reservation .

ASSISTANT: Sure Gary, please wait a while. I will check for the reservation. Sorry Gary, I didn't find any reservation with your name. Do you need any other help?

USER: OK . No need .

ASSISTANT: OK, thank you for reaching us.

USER: Thank you .

ASSISTANT: Have a good day.