You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Can you please check the flights availability from DEN to HOU airports?

ASSISTANT: Sure, I am here to help you. Can you please share your journey dates?

USER: My journey dates are, start on Oct 20th and return back on Oct 22nd.

ASSISTANT: Do you have any connection limit preference?

USER: Flight has to be with one connection.

ASSISTANT: May I know your class preference for this trip?

USER: I prefer economy class in my journey.

ASSISTANT: Do you have any other specifications for this trip?

USER: No.

ASSISTANT: May I know your good name please?

USER: This is Robert Green.

ASSISTANT: Delta Airlines is providing connecting flight on this route with a ticket fare of 200 and flight departs at 7:00AM and arrives at 19:00PM, shall I book your ticket in this flight?

USER: Ok, proceed.

ASSISTANT: Robert Green, your ticket is reserved in economy class of flight number 1022.

USER: Thank you for your help.

ASSISTANT: You are welcome and have a safe journey.