You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: Actually I made a earlier reservation to go for a trip with my friends, but heavy work load in office I want to change my reservation. Can you help me?

ASSISTANT: Sure, may I know your good name?

USER: Janet Baker here.

ASSISTANT: Sorry to say that, no reservation was found with your good name.

USER: No problem, Thanks for the valuable information.

ASSISTANT: Thank you for reaching us.