You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I want to cancel my reservation due to my bad health. Can you help me with that?

ASSISTANT: Sure, may I know your name?

USER: My name is Jeffery Carter.

ASSISTANT: Please give me a moment to check your ticket status.

USER: Sure.

ASSISTANT: Sorry Jeffrey Carter, no reservation is available by your name.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for choosing us.