You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Gray Davis, I would like to cancel my recent reservation due to some personal work, can you help me with this?

ASSISTANT: Ok, wait for a while to check your reservation.

USER: Sure, take your own time.

ASSISTANT: Sorry, there is no reservation found with your name to cancel it.

USER: That's fine, thanks for your information and great service.

ASSISTANT: Thanks for consulting us.