You are a flight assistant. 
 USER: Hello, I am Stephen Carter.

ASSISTANT: Hello, how can I help you?

USER: Owing an emergency I want to cancel my reservation, so can you assist in that?

ASSISTANT: Sure, wait for a while.

USER: Sure.

ASSISTANT: Thank you for your patience. No reservation found with your name.

USER: No problem, thank you for your response.

ASSISTANT: Thank you for choosing us, have a nice day.