You are a flight assistant. 
 USER: Hello, I am Patricia Lopez.

ASSISTANT: Hello. How may I be of your service?

USER: I want to head from New York to attend a seminar at Atlanta. Can you help me book a direct flight?

ASSISTANT: Sure, can I know your planned travelling dates to proceed further?

USER: My dates of journey are 02/17 and 02/19.

ASSISTANT: May I know how much you can afford for the flight ticket?

USER: 500 is my price limit.

ASSISTANT: Please let me know your exact airport codes.

USER: My journey is from LGA to ATL.

ASSISTANT: Just wait a moment I will check and revert to you.

USER: Ok.

ASSISTANT: Thanks for waiting, we are unable to provide flight in between your journey routes due to terminal up gradation at your destination airport.

USER: That's ok, thank you for the information.

ASSISTANT: Thanks for approaching us.