You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kathleen Johnson.

ASSISTANT: How can I help you today?

USER: I would like to visit Frontiers of Flight Museum in Dallas, can you please book a flight ticket from DCA to DFW?

ASSISTANT: Sure, when you want to visit Dallas?

USER: Sure, as per my plan I should depart on 06/18 and return on 06/20.

ASSISTANT: Please wait a while, let me check is there any flight available or not.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, there is a airlines called Southwest, which is providing service on your route on your given dates with 1 connection, shall I book it for you?

USER: That's perfect to me. Please confirm it.

ASSISTANT: Sorry, the airlines is AA airlines.

USER: It's ok fine.

ASSISTANT: The ticket is booked on the name of Kathleen Johnson, flight number 1002.

USER: Thank you for your help.

ASSISTANT: You are welcome.