You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am John Hall.

ASSISTANT: What service do you expect from our travel agency?

USER: Can you book a flight ticket for me from DEN to ORD?

ASSISTANT: Sure, can you please tell me your travelling dates?

USER: Ok, my dates are on 01/06 and back on 01/08.

ASSISTANT: There is a flight available in the Southwest airlines, which is having a connection limit 1 and the price is 200. Shall I confirm the flight ticket in this airlines?

USER: Yes, you can confirm my flight ticket booking with the above flight.

ASSISTANT: Ok, I have confirmed your ticket with the flight number 1010.

USER: I appreciate your service in my ticket booking, thank you.

ASSISTANT: Thank you for choosing our travel agency.