You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Nancy Collins this side, can you help me to cancel my ticket as I have some issues regarding my health?

ASSISTANT: Ok, hold on for a moment.

USER: Ok.

ASSISTANT: Sorry Nancy, there are no flights reserved with your name.

USER: No issues, probably it might been cancelled before, thank you for your support.

ASSISTANT: Thank you for reaching us.

USER: Welcome.

ASSISTANT: Have a good day.