You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you at this moment?

USER: I am Christopher Harris. I would like to cancel my existing flight ticket which has been booked earlier this week. Could you help me out?

ASSISTANT: Sure, please give me few minutes, let me check with your recent reservation status.

USER: Sure, please take your time.

ASSISTANT: There is no recent reservation found on your name in our records.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for choosing us.