You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I help you now?

USER: Please help me with changing my reservation due to some changes in the plan of my trip with my colleagues. Can you help me with that?

ASSISTANT: Sure, I will help you with changing.

USER: Thank you.

ASSISTANT: For changing, we need to know your name please?

USER: Sure, I am Dorothy Wright.

ASSISTANT: Ok, please wait. Let me help you.

USER: Sure.

ASSISTANT: Thanks for waiting. Sorry Dorothy Wright, there is no active reservation on your name to change it.

USER: Ok, thanks for your help and support.

ASSISTANT: Thanks for approaching us.