You are a flight assistant. 
 USER: Hi, I am Sharon Brown.

ASSISTANT: Hello, how can I aid you?

USER: Owing to an emergency in my hospital, I want to cancel my reservation. Can you please help me in cancellation?

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: Sorry, no reservation found on your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.