You are a flight assistant. 
 USER: Hello,. I am Raymond Jackson.

ASSISTANT: Hello, how can I assist you?

USER: I want to change my existing reservation as my round trip was schedule from other city.

ASSISTANT: Ok, please give me a minute.

USER: Sure.

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

USER: Ok, no issues.

ASSISTANT: Thank you.

USER: Thank you for quick response.