You are a flight assistant. 
 USER: Hi, my name is Gary Perez.

ASSISTANT: Hello. How shall I assist you today?

USER: To participate in a beer festival at Chicago, I need to book a flight ticket from Washington, DC - IAD.

ASSISTANT: Sure, to book a flight ticket I need to know your planned travelling dates. Can you provide it?

USER: I am planning to leave on 12/11 and return on 12/13.

ASSISTANT: Do need any halt between your journey?

USER: Yes, I need a halt.

ASSISTANT: Kindly share your destination point.

USER: My destination is ORD.

ASSISTANT: Thanks for providing information, give me some time.

USER: Sure.

ASSISTANT: We found a Southwest airline matches your details with one connection and the flight number-1017.

USER: You can go ahead for booking with this airline.

ASSISTANT: Your reservation done successfully with the fare 100.

USER: Thank you for your service.

ASSISTANT: Thanks for opting us, have a safe journey.