You are a flight assistant. 
 USER: Hello, Stephen Hill here.

ASSISTANT: Hello, how may I aid you today?

USER: Please help me in booking my flight ticket to Las Vegas for trekking in Red Rock Canyon with the trekking club members. Please book me a flight within the fare of 5000?

ASSISTANT: Sure, do you need any halt in between journey?

USER: Yes, I prefer a halt.

ASSISTANT: Can I have your source and destination?

USER: My journey would be from DCA to LAS.

ASSISTANT: Please specify your planned dates?

USER: I would like to fly from 11/13 to 11/15.

ASSISTANT: Ok, please hold a minute.

USER: Ok.

ASSISTANT: Thanks for your time, we have found a JetBlue airline, flight number-1012 connections-1 and price limit is 300.

USER: Ok, go to my booking.

ASSISTANT: Sure, your reservation is done successfully.

USER: Thanks for your service.

ASSISTANT: Thank you for opting us.