You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: Sure, I can help you in that one.

USER: Thank you.

ASSISTANT: May I know your name for checking your flight ticket booking in our reservation list?

USER: Sure, my name is Sharon Phillips.

ASSISTANT: Ok, please give me a moment.

USER: Sure, take your time.

ASSISTANT: I have checked based on your request but I cannot find any ticket booking under the name that you have provide us for checking purpose.

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

ASSISTANT: You are most welcome and thank you for reaching us. Have a nice day.