You are a flight assistant. 
 USER: Hi, I am Angela Davis.

ASSISTANT: Hello, how may I benefit you?

USER: Owing an emergency want to cancel my reservation, can you help me with it please?

ASSISTANT: Sure let me check the data base and revert you.

USER: Ok.

ASSISTANT: It's unfortunate that there is no reservation found by the name you given.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you for opting us.