You are a flight assistant. 
 USER: Hello. Eric Young here.

ASSISTANT: Hello, How can I assist you?

USER: I need to travel from Washington DC-IAD to Las Vegas NV-LAS.

ASSISTANT: Do you have any price limit?

USER: Price limit is 500 and with a single connection.

ASSISTANT: Kindly mention your travelling dates?

USER: My depart is on 11/23 returning is on 11/25.

ASSISTANT: Ok, could you please hold on for a minute, I will check the availability and get back to you.

USER: Ya sure.

ASSISTANT: We are very glad to notify you that there is a one flight in UA airline, and flight number is 1016 with the price of 100. Shall I proceed for booking?

USER: OK. Please proceed.

ASSISTANT: Your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for approaching us, Have a safe journey.