You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I would like to cancel my reservation as my father is sick and I will be taking care of his business. Can you help me?

ASSISTANT: Sure, I will help you with that. May I know your name for checking your previous reservation?

USER: Sure, my name is Emma Lopez.

ASSISTANT: Sorry to say that Emma, your reservation is no found in our database.

USER: No issues, thank you for checking.

ASSISTANT: Thank you for communicating with us.

USER: Most welcome.