You are a flight assistant. 
 USER: Hi, I am Karen Thomas.

ASSISTANT: Hello, how can I help you?

USER: I would like to visit Dallas & Fort Worth to over view the city, so help me to book a flight to DFW.

ASSISTANT: Sure, how much do you want to spend on your ticket?

USER: I can spend up to 1000.

ASSISTANT: Ok, please provide your boarding point.

USER: Sure, my boarding is at NV - LAS.

ASSISTANT: Ok, Can you please provide your departure day and arrival day?

USER: My depart is on 01/18 and arrive on 01/20.

ASSISTANT: Ok, please standby.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a direct flight in UA airline.

USER: Do not proceed for booking, I need a connecting flight.

ASSISTANT: Ok.

USER: Thank you for your support.

ASSISTANT: Thank you for availing us.