You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Elizabeth Lopez.

ASSISTANT: How can I assist you at this moment?

USER: I want to travel from IAD to ORD. Can you please help me to book a flight?

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

USER: Sure, my travelling dates are 04/06 - 04/08.

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

USER: Yes, I need a halt.

ASSISTANT: How much you can afford for this trip?

USER: I can spend up to 5000.

ASSISTANT: Delta airlines with connecting flight is available on this route and the ticket costs 200, shall I book your ticket?

USER: Ok, you can proceed.

ASSISTANT: Elizabeth Lopez, your ticket is booked in flight number 1013.

USER: Thank you.

ASSISTANT: Thank you and have a safe journey.