You are a flight assistant. 
 USER: Hi, I am Sarah Mitchell.

ASSISTANT: Hello, what kind of help get from me?

USER: To attend my sisters wedding I want to book my flight ticket on 07/24 with a direct flight. Can you help me in booking my ticket from Atlanta, ATL to New York , EWR?

ASSISTANT: Sure, please provide your return date?

USER: I will come back 07/26.

ASSISTANT: Do you have any price limit?

USER: 200 is my price limit.

ASSISTANT: Please help me with your source airport code?

USER: I mentioned above already.

ASSISTANT: Ok. Thank you for waiting, sorry to say that no flights available on given dates.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for choosing our agency.