You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Is there any help that you are expecting from my side?

USER: Please help me to cancel my existing reservation. Because I am unable to travel due to some health issues.

ASSISTANT: Sure, I am happy to help you and  may I know your name for searching purpose?

USER: Thank you for your positive response. My name is James Phillips.

ASSISTANT: Give me a moment.

USER: Ok, take your time. I will wait for your reply.

ASSISTANT:  Thank you for waiting, I have checked in reservation list to cancel your ticket but could not find any reservation with your name.

USER: It's ok, not an issue with that. Anyways thank you for your time in checking my ticket status.

ASSISTANT: Thank you for reaching us and have a nice day, most welcome.

USER: You are welcome.