You are a flight assistant. 
 USER: Hello, I am Amy Carter.

ASSISTANT: Hello, how can I help you today?

USER: My friend birthday party place has been changed to Charlotte. Can you please change my existing reservation?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Wait for some time I will check the reservations on your name and get back to you.

USER: Sure, I will wait.

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

USER: That's not a problem. Thanks for your information.

ASSISTANT: Thanks for approaching us.\.