You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

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

ASSISTANT: Sure, may I know your name please?

USER: I am Sharon Green.

ASSISTANT: Sorry, we did not found any reservation on your name.

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

ASSISTANT: Thank you for reaching us.