You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I guide you at this moment?

USER: I need to cancel my ticket due to my health issue, can you help me with that?

ASSISTANT: Sure, I can cancel your reservation right now. Before that I need to know your good name please?

USER: I am Timothy Davis.

ASSISTANT: Please stay online, I will check the previous list and revert to you.

USER: Ok.

ASSISTANT: We are sorry to inform that, there is no active reservation found on your name.

USER: That's ok. Thank you.

ASSISTANT: Thanks for reaching us, wish you a great day.