You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. May I know your name please?

USER: I am Larry Williams.

ASSISTANT: How can I assist you?

USER: Owing to an emergency, I want to cancel my recent reservation. Can you help me in this?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait for a second.

USER: Sure, take your time.

ASSISTANT: Thanks for waiting, there is no reservation found in your name to cancel.

USER: It's ok, not an issue. Thank you for your information.

ASSISTANT: Thanks for approaching us, we hope to serve you again.