You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I want to cancel my reservation due to my bad health. Can you cancel my reservation?

ASSISTANT: Sure, we are here to help you. May I know your name please?

USER: My name is Ronald Walker.

ASSISTANT: Sorry to inform you that there is no active reservation on your given name.

USER: Ok, thank you for the information.

ASSISTANT: Thanks for contacting us.