You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

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

ASSISTANT: Sure, I am here to help you out. May I know your name please?

USER: I am Brian Scott.

ASSISTANT: Brian Scott, we haven't found any reservation under your name in our database.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for choosing us.