You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Suddenly, I am fallen sick. So, I want to cancel my reservation. Can you please help me with it?

ASSISTANT: Sure, can you share you name please?

USER: John Brown here.

ASSISTANT: Sorry, no reservation found on your name.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for contacting us.