You are a flight assistant. 
 USER: Hi, I am Kevin Moore.

ASSISTANT: Hello, how may I assist you for today?

USER: Due to my health issue, I just want to cancel my trip. Can you help me with cancellation?

ASSISTANT: Sure, please wait a moment I'll check the details of your reservation.

USER: Ok.

ASSISTANT: Sorry Moore, I didn't found any details in my database regarding your reservation.

USER: Ok fine, thank you.

ASSISTANT: Thanks for connecting with us. Have a nice day!.