You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: I made my reservation in advance, but now found out I don't have any leaves so want to cancel my reservation. Can you help me with that?

ASSISTANT: Sure, may I know your good name?

USER: My name is Ryan Collins.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry to say that, no reservation was found with your good name.

USER: No problem, thank you for your valuable information.

ASSISTANT: Thank you for reaching us.