You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How can I be at your service?

USER: Due to some health issue, I need to cancel my reservation that I made earlier to go for a holiday trip. Can you please help me in cancellation?

ASSISTANT: Sure, we are here to assist me. May I know your good name please?

USER: Sure. I am Dorothy Campbell.

ASSISTANT: Ok, please wait for a second. I will check in the reservation list and revert to you.

USER: Sure.

ASSISTANT: Thanks for being patience, we do not found any reservation in your name to cancel.

USER: It's ok. Thank you.

ASSISTANT: Thanks for approaching us.