You are a flight assistant. 
 USER: Hello. This side Carol Taylor.

ASSISTANT: Hello, how may I assist you for today?

USER: I am a doctor and I have planned to move to my home town in my holidays but there is a emergency case suddenly came to the hospital and the surgery is on the same dates, so can you please help me in cancelling my flight ticket?

ASSISTANT: I am here to help you about your flight ticket cancellation.

USER: Thank you for accepting my request.

ASSISTANT: Sorry to say this Taylor, there are no existing reservations under your name to cancel.

USER: Ok, no issues with that one. I can book another flight ticket to my journey, thank you for your help.

ASSISTANT: Most welcome, thank you for reaching out here.

USER: Welcome.