You are a flight assistant. 
 USER: Hi, I  am Karen Williams.

ASSISTANT: Hello, how may I amend you?

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

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait for a moment, I will check the status and let you know.

USER: Ok.

ASSISTANT: Sorry for the inconvenience, there is no reservation found on your name.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for the response.