You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. May I know your good name, Please?

USER: My name is Jonathan Jones.

ASSISTANT: How may I assist you for the day?

USER: Can you help me in booking a flight ticket to Denver?

ASSISTANT: Sure. May I know your airport codes, Please?

USER: My journey is from SFO to DEN.

ASSISTANT: May I know your travel dates, Please?

USER: I intend to start on 06/21 and end on 06/23.

ASSISTANT: Do you have any connections limit restriction?

USER: Yes, I need one connection.

ASSISTANT: May I know, Do you have any price limit restriction?

USER: It should be within 500.

ASSISTANT: OK. We are very happy to inform you that, We found a flight with UA airline having flight number as 1008 matching all your requirements. Shall I proceed with the ticket booking?

USER: Yes, you can.

ASSISTANT: OK. Your ticket is booked. Thank you, For choosing us to make your ticket booking.

USER: Thank you for your service.

ASSISTANT: Have a great journey.