You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Sandra White here.

ASSISTANT: Can you please tell me how can I assist you?

USER: I want to travel from NV-LAS to DC-IAD for attending a Seminar. Can you please help me for booking the flight ticket?

ASSISTANT: Ok, can you please provide me your travel dates?

USER: My departure date is 06/21 and return date is 06/23. Make sure my connections limit is 1.

ASSISTANT: Here is flight with 1 connection and price is 200 and 1019 as flight number.

USER: Please proceed for booking the ticket.

ASSISTANT: Ok, your ticket has been confirmed.

USER: Thank you for helping me.

ASSISTANT: Thank you.