You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

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

ASSISTANT: I am here to help you, can you please let me know your name?

USER: Sure, my name is Joseph Brown.

ASSISTANT: Brown, I will check your reservation status and get back to you.

USER: Ok.

ASSISTANT: Brown, I have not found any reservation by your name in our database.

USER: That's ok, thank you.

ASSISTANT: Thank you for contacting us and have a nice day.