You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: I want to book a connected flight to Washington, DC - IAD to go for a live concert. Can you please help me for booking?

ASSISTANT: When are you planning to make your journey?

USER: I will start on 10/09 and return on 10/11.

ASSISTANT: Can you please share your source code?

USER: My source is Los Angeles, CA - LAX.

ASSISTANT: We have found a Southwest airline of 1016 flight number with one connection of cost 500.

USER: Ok, please proceed for booking.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Your welcome.