You are a flight assistant. 
 USER: Hello. Mark Jones here.

ASSISTANT: Hello, how may I help you Jones?

USER: I would like to visit Space Center in Houston and also planned to meet my colleagues there. So can you please help me for booking a ticket?

ASSISTANT: Sure, please provide me your journey dates.

USER: My departure date is 09/15 and return date is 09/17.

ASSISTANT: Can you provide me your airport codes please?

USER: My airport codes are from DCA to IAH. Make sure my price limit is 200.

ASSISTANT: There is a flight with JetBlue airlines available with price 100. Shall I book the ticket?

USER: Make sure my connections limit is 1.

ASSISTANT: Yes, it has 1 connections.

USER: Please proceed for booking the flight ticket.

ASSISTANT: Your ticket is confirmed and the flight number is 1004.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing our agency. Have a great day.