You are a flight assistant. 
 USER: Hi. I am David Martinez.

ASSISTANT: Hello, how may I assist you today?

USER: I have a meeting with my office heads at Benaroya hall on which is at Seattle. Can you please book me a ticket with price of 500?

ASSISTANT: Sure, can you please share your airport codes?

USER: I want to fly from Las Vegas, NV-LAS to Seattle, WA-SEA.

ASSISTANT: Ok, may I know when your are willing to travel?

USER: My journey dates are from 03/03 to 03/05.

ASSISTANT: Do you need any halt in between journey?

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

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Thank you for your time, we have found a Delta airline, flight number-1002 connections-1 and ticket fare is 100.

USER: Please proceed for booking.

ASSISTANT: Sure, your reservation has been done.

USER: Thank you.

ASSISTANT: Thank you for approaching us.