You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today from my end?

USER: My friend birthday party place has been changed to Los Angeles, Can you please change my existing reservation?

ASSISTANT: Sure, I am here to help you out. Please provide me your name?

USER: Sure, Janet Edwards here.

ASSISTANT: Sorry Janet Edwards, there is no active reservation on your name.

USER: Ok, Thank you for your help.

ASSISTANT: Thank you for reaching us.