You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I need to reserve my ticket from ATL to LAS. Can you please help me with booking?

ASSISTANT: How can I assist you today?

USER: Thank you for considering my request.

ASSISTANT: Sure, can you share me your travelling dates?

USER: I want to start my journey on Nov 20 and return back on Nov 22.

ASSISTANT: Do you have any airline preference?

USER:  No, I ok with any airlines.

ASSISTANT: Is there any other specifications?

USER: No, I din't have any other specifications.

ASSISTANT: I need to know your name for booking a flight ticket?

USER: My name is Donald Collins.

ASSISTANT: I found a flight with the price of 300 and 02 connections. Can I proceed to booking?

USER: I need to book my ticket in business class and the connection limit is 0.

ASSISTANT: Sorry, no flights are found with 0 connection limit.

USER: Ok, no problem, anyway thank you for the information.

ASSISTANT: Thank you for reaching us.