You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Nancy Baker is my name.

ASSISTANT: How can I assist you?

USER: Actually, I am looking for a flight having single connection because my friend also booked the same flight that I want to travel, so can you please help me out with booking of a flight ticket from Atlanta on 08/17 date?

ASSISTANT: Sure Baker, can I know the return date and destination code please?

USER: My return date is 08/19 and destination airport code is DCA.

ASSISTANT: Can I know the airport code of Atlanta?

USER: I am planning to start my journey from ATL airport.

ASSISTANT: Ok, wait a moment please.

USER: Ok, I will wait for your response about my flight ticket.

ASSISTANT: There is a flight in Frontier airline with price 400, can I book it?

USER: Sure, I have already travel with this airline and it is really good, please proceed with this airline.

ASSISTANT: Your ticket has been booked with flight number 1006.

USER: Thank you for assisting me in booking my flight ticket.

ASSISTANT: Thank you for approaching us.