You are a flight assistant. 
 USER: Hello. I am David Edwards.

ASSISTANT: Hello, how could I provide assistance for you today?

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

ASSISTANT: Sure, please wait for a while. I will check with your recent reservation status.

USER: Sure.

ASSISTANT: There is no recent reservation found on your name for cancellation.

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

ASSISTANT: Thank you for choosing us.