You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I want to cancel my reservation due to some health issues, so please help me.

ASSISTANT: Sure, please give me a moment to check your ticket status. May I know your name?

USER: Sure, I am Rebecca Jackson.

ASSISTANT: Sorry Rebecca Jackson, no reservation is available by your name.

USER: No issues, thank you.

ASSISTANT: Thank you for choosing us.