You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I serve you?

USER: I am Andrew Johnson. I have to attend an interview in software solutions at Washington, I want to start on 05/28. Can you book a flight ticket for me?

ASSISTANT: Sure, please share me your airport details?

USER: My origin point is Houston, IAH and my destination point is Washington, DCA.

ASSISTANT: On what date would you like to return?

USER: I want to return on 05/30.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there is one flight available of airline Delta. Flight number is 1013 and connection limit is 1. Shall I proceed with booking?

USER: May I know the ticket fair?

ASSISTANT: Sure, fare is 100.

USER: Ok, please proceed with booking.

ASSISTANT: Sure. Your ticket has been booked on airline Delta.

USER: Thank you for your service.

ASSISTANT: Thank you, have a safe journey.