You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Joseph Jackson.

ASSISTANT: How can I help you?

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

ASSISTANT: Sure, I will help you. Please, wait a minute.

USER: Ok.

ASSISTANT: Thank you for waiting, I did not find any reservation on your name to cancel.

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

ASSISTANT: Thank you for approaching us.