You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: 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?

ASSISTANT: Sure, may I know your good name please?

USER: Dorothy Rodriguez here.

ASSISTANT: There is no reservation on your name. Thank you.

USER: No problem,Thank you.