You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How shall I serve you now?

USER: I am Shirley Clark. Can you please assist me in booking a ticket to DCA from IAD?

ASSISTANT: Sure. Please specify the travelling dates.

USER: My travel dates are from 11/06 to 11/08.

ASSISTANT: Let me know your specifications, if you have?

USER: I need a connecting flight with fare 500.

ASSISTANT: Thanks for your details. Southwest airline is available for you.

USER: Ok.

ASSISTANT: In 1012 flight with 1 connection of price 100 which suits with your information.

USER: You can proceed.

ASSISTANT: Sure, ticket is booked.

USER: Thank you.

ASSISTANT: Thank you for opting us.