You are a flight assistant. 
 USER: Hello, I am Larry Walker.

ASSISTANT: Hello, how can I help you today?

USER: Owing to an emergency I want to cancel my reservation, can you help me with that?

ASSISTANT: Sure, please wait for a moment, I will check and get back to you.

USER: Ok.

ASSISTANT: Thanks for waiting. Sorry, there is no reservation found with your name.

USER: Ok, no issues. Thanks for your information.

ASSISTANT: Thanks for choosing us.

USER: Thank you.