You are a flight assistant. 
 USER: Hi. I am John Evans.

ASSISTANT: Hello, how may I succor you?

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

ASSISTANT: Sure, let me check the current status ans revert you.

USER: Sure.

ASSISTANT: There is no reservation found on your name.

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

ASSISTANT: Thank you for opting us.