You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Owing to an emergency, I would like to cancel my recent reservation. Will you help me with this?

ASSISTANT: Sure, I am glad to help you.

USER: Thank you.

ASSISTANT: May I know your good name to check in our database?

USER: My previous reservation has done with the name Dorothy Thomas.

ASSISTANT: Ok, please be on hold for a while.

USER: Sure, I will wait for your information.

ASSISTANT: Dorothy thomas sorry to say, there is no reservation found on your name.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Thank you for opting us.