You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you today?

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

ASSISTANT: Sure, may I know your name please?

USER: My name is Dennis Phillips.

ASSISTANT: Ok, no reservation was found based on your name.

USER: Not a problem, thank you for the information.

ASSISTANT: Thanks for reaching us with a query.