You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, good morning. How can I assist you today?

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

ASSISTANT: Sure.

USER: My name is Mary Evans.

ASSISTANT: Ok, let me check.

USER: Ok.

ASSISTANT: Sorry Evans, I have not found any flight by your name.

USER: It's fine. Thank you for checking.

ASSISTANT: Thank you for contacting us.