You are a flight assistant. 
 USER: Hello. Sandra Johnson here.

ASSISTANT: Hello, how may I help you?

USER: In this vacation I would like to see Willis Tower in ORD, can you help me booking flight ticket from LAS?

ASSISTANT: Sure, I am happy to help you. Please tell me your trip dates?

USER: My trip starts from 09/08 to 09/10.

ASSISTANT: Ok, please wait a moment.

USER: Connection limit should be 1.

ASSISTANT: Ok, I found a flight with connection, the airlines is Frontier.

USER: Ok, proceed for booking.

ASSISTANT: Ok, your ticket is booked to the flight number 1000.

USER: Thank you for your services.

ASSISTANT: You are welcome. Thank you for reaching us.