You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Mark Lee. I want to book a  flight ticket, can you help me?

ASSISTANT: Sure Lee, would you tell your travelling details?

USER: I want to go from DC-DCA to NY-JFK.

ASSISTANT: Will you provide your travelling dates?

USER: My travelling dates are 05/26 to 05/28.

ASSISTANT: OK. Please give me a moment.

USER: Sure.

ASSISTANT: Thanks for waiting. As per your request the flight is available. The flight number is 1013 with price 100 and connections 1. Are you OK with this?

USER: Is it OK you can proceed.

ASSISTANT: May I proceed for booking the ticket?

USER: OK.

ASSISTANT: OK, your ticket is booked.

USER: Thank you for your service.

ASSISTANT: Thanks for reaching us. Have a safe journey.