You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I be of your service?

USER: I want to cancel my reservation which is done recently due to some health issues, can you please help me in this?

ASSISTANT: Sure, I'll try to help you in cancellation.

USER: Thank you.

ASSISTANT: Could you please share your name to check the reservation list?

USER: Sure, my name is Ronald Smith.

ASSISTANT: Thank you for providing your name, please wait a moment.

USER: Sure, I will wait.

ASSISTANT: Thank you for waiting, I have checked the reservation list to cancel your ticket but there is no reservation found by this name.

USER: Ok, no problem. Anyways, thank you for your service.

ASSISTANT: Thank you for approaching us.