Hello.
Hello. Is there any help that you are expecting from my side?
Please help me to cancel my existing reservation. Because I am unable to travel due to some health issues.
Sure, I am happy to help you and  may I know your name for searching purpose?
Thank you for your positive response. My name is James Phillips.
Give me a moment.
Ok, take your time. I will wait for your reply.
 Thank you for waiting, I have checked in reservation list to cancel your ticket but could not find any reservation with your name.
It's ok, not an issue with that. Anyways thank you for your time in checking my ticket status.
Thank you for reaching us and have a nice day, most welcome.