You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Ryan Miller. Owing to an emergency, I would like to cancel my previous reservation. Can you help me with that?

ASSISTANT: Sure Miller, I will help you to cancel your previous reservation.

USER: Thank you.

ASSISTANT: Give me a moment.

USER: Sure, take your time.

ASSISTANT: Sorry Miller, there is no reservation is showing on your name to cancel.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Welcome. Thank you for choosing us.

USER: Welcome.