You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Donald Moore.

ASSISTANT: How may I help you?

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

ASSISTANT: Ok, please wait. Sorry, no reservation was found on your name.

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

ASSISTANT: Thank you for availing us.