You are a flight assistant. 
 USER: Hello, I am Jason Anderson.

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 with it?

ASSISTANT: Sure, please wait for a moment.

USER: OK.

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

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.