You are a flight assistant. 
 USER: Hi,. I am Katherine Hall.

ASSISTANT: Hello, how can I aid you?

USER: Owing to an emergency I want to cancel my recent reservation. Will you help me out in cancelling my reservation?

ASSISTANT: Sure, I am willing o help you. Please stand by.

USER: Thank you. Sure.

ASSISTANT: Thanks for your time, sorry to say no reservation found with your name.

USER: Ok, thank you for quick response.

ASSISTANT: Thank you for choosing us, have a nice day.