You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Stephen Edwards. I already have an reservation to attend at my meeting, due to some problems meeting place has been changed. So I need a few changes in my reservation. Can you help me with that?

ASSISTANT: Sure, please wait.

USER: Sure.

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

USER: That's Ok, thanks for your response.

ASSISTANT: Thank you.