You are a flight assistant. 
 USER: Hello. I am Elizabeth Baker.

ASSISTANT: Hello, how can I support 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 please help me that?

ASSISTANT: Sure, please wait for a moment. I will check and get back to you.

USER: Ok.

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

USER: Ok, no problem. Thank you so much.

ASSISTANT: Thank you for opting us.