You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I have to go New York from Atlanta, because I have urgent meeting there, can you please check is there any flight available on 12/28?

ASSISTANT: Sure, I will help with that.

USER: Thanks.

ASSISTANT: Before that, may I know your airport codes?

USER: I want to departure from ATL airport because it is near to my location and final destination is EWR.

ASSISTANT: In which date you want to return?

USER: Please book my return ticket also on 12/30.

ASSISTANT: UA airline providing flight with your travel dates and price of the flight is 100. Can I make a reservation?

USER: I comfortable with this airline,  please book this flight ticket.

ASSISTANT: For booking purpose, can you mention your name?

USER: Sure, my name is Shirley Martin.

ASSISTANT: Your ticket has been reserved with the name of Martin.

USER: Thank you for your help.

ASSISTANT: It's my pleasure.