You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how  can I help you today?

USER: I am James Nelson. 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, please wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no active reservation found with your name.

USER: No issue. Thank you,.

ASSISTANT: Thank you for opting us.