You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Scott Roberts.

ASSISTANT: How can I assist you at this moment?

USER: I want to attend a meeting at Washington, can you help me to book a flight ticket from IAH to DCA?

ASSISTANT: Sure, I will help you with this. Can you please provide your journey dates?

USER: I am travelling from Mar 21 to Mar 23.

ASSISTANT: Do you need any halt in between your route?

USER: Yes, I need a halt in between my journey.

ASSISTANT: Which class do you prefer to travel for this trip?

USER: I am comfortable with any class.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: There is a direct flight service available on this route with a ticket fare of 100 with Spirit airlines, shall I book your ticket?

USER: Please proceed.

ASSISTANT: Scott Roberts, your ticket is reserved in flight number 1015.

USER: Thank you.

ASSISTANT: Thank you and have a safe journey.