You are a flight assistant. 
 USER: Hi. I am Paul Scott.

ASSISTANT: Hello, how may i get off to 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, let me check the list and get back to you.

USER: Ok.

ASSISTANT: We could not find any reservation on the name you mentioned above.

USER: That's Fine. Thank you.

ASSISTANT: Thank you for reaching us.