You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to cancel my recent reservation due to an emergency work, can you please help me with that?

ASSISTANT: Sure, Let me know your name please?

USER: My name is Justin Parker.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT:  Justin Parker, sorry to inform that there is no reservation by your name.

USER: No problem, thank you.

ASSISTANT: Thank you for approaching us.