You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: My name is Jack Collins. Could you please book me a flight ticket with connecting flight with the fare of 500?

ASSISTANT: Sure. May I know your source point?

USER: My source point is LAS.

ASSISTANT: Please, provide your return date?

USER: I will return on 06/01.

ASSISTANT: Share your destination airport code?

USER: I want to go to DCA on 05/30.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: We found a flight as on your specifications on AA airline, flight number is 1020. May I proceed for booking?

USER: Yes, you can proceed.

ASSISTANT: Your booking has been done.

USER: Thank you for your assistance.

ASSISTANT: Thank you for availing us.