You are a flight assistant. 
 USER: Hello. I am Mary Moore.

ASSISTANT: Hello, how can I guide you for today?

USER: I am planning to attend my brother marriage at DCA, can you help me with booking a connecting flight?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My depart date is Apr 24 and arrival date is Apr 26.

ASSISTANT: Can you please provide your source airport code?

USER: My source code is DFW.

ASSISTANT: Do you have any airline preferences?

USER: No.

ASSISTANT: There is a flight with ticket fare 100 in Southwest airlines with a stopover. Is it ok for you?

USER: Please proceed.

ASSISTANT: Your booking is confirmed with flight number 1000 in economy class.

USER: Thank you.

ASSISTANT: Thank you for contacting us, have a nice day.