You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: My name is Ronald Carter, I want to cancel my reservation due to my bad health. Can you help me with that?

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is a reservation found on your name and cancelled it successfully.

USER: Ok, thank you for your service.

ASSISTANT: Thank you for choosing us.