You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

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

ASSISTANT: Sure, I will help you with that. May I know your name please?

USER: Myself Patrick Williams.

ASSISTANT: Wait for a while.

USER: Sure.

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

USER: No problem, thanks for checking.

ASSISTANT: Thank you for reaching us.