You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how best I can help you today?

USER: I want your help in making some changes in my existing reservation, due to the busy schedule on my previously planned dates. Can you please change my reservation which was made on the name of Jeffrey Wright?

ASSISTANT: Sure, we are glad to help you to change it. Please wait for a couple of minutes.

USER: Sure.

ASSISTANT: Thanks for waiting, there was no reservation found on your name to change it.

USER: Ok, Thank you for your help.

ASSISTANT: Thank you for approaching us.