You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you for today?

USER: I am Helen Nelson. I am planning to book a ticket with the price of 500. Can you please help me out to book a ticket for me ?

ASSISTANT: Yes, I can help you with that.

USER: Thank you.

ASSISTANT: Can you share me your scheduled dates of journey?

USER: I would like to take off my flight on  01/23 and return back on 01/25.

ASSISTANT: Ok, could you share me your nearest airport codes for this journey?

USER: My nearest source code airport code is DEN and my destination airport code is HOU.

ASSISTANT: Do you have any other specifications?

USER: Make sure my connection limit is 1.

ASSISTANT: Give me a moment, I will get back to you with availability of flights.

USER: Sure, I will wait for your reply.

ASSISTANT: I have found a flight ticket for you with a price of 100 and 1 connecting flight. Can I proceed to booking?

USER: That's great, you can proceed the booking.

ASSISTANT: Ok, your ticket has been booked with Delta airlines.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching our agency.