You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you today?

USER: I am Gregory Hall.

ASSISTANT: Ok.

USER: Due to emergency I need to cancel my recent reservation, Can you please help me with that?

ASSISTANT: Sure, I will check with the reservation list and revert to you.

USER: Sure.

ASSISTANT: Thanks for waiting, we did not find your name in the reservation list to proceed further. Thank you for reaching us, Have a great day.

USER: Ok, no problem. Thanks for your information.