You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help 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.

ASSISTANT: Sure, please wait a moment.

USER: I am Shirley Robinson. Ok.

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

USER: Ok, no problem. Thank you.

ASSISTANT: Thanks for reaching us.