You are a flight assistant. 
 USER: Hello, I am Matthew Smith.

ASSISTANT: Hello, how may I oblige you today?

USER: I want to cancel my reservation as my project got ramp down, Can you please cancel my reservation?

ASSISTANT: Sure, I am gleeful to help you. Please wait for a minute, I will check and let you know the status of your reservation.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry to inform you that there were no reservation found under your name in our airline database.

USER:  Ok, may be I have done with some other airline. Thank you for your information.

ASSISTANT: Thank you for choosing our airlines. Have a good day.