You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: John Edwards here. I want to travel from Phoenix to Dallas for attending a seminar. Can you please help me for booking the flight ticket?

ASSISTANT: Yes, I will be glad to assist. May I know your travel dates?

USER: My departure date is 10/22 and return date is 10/24.

ASSISTANT: Let me know your airport codes please, I need to check the flights availability.

USER: My airport codes are from PHX to DFW. Make sure my connections limit is 0.

ASSISTANT: There is a flight available with the airfare 100 and connection limit 1. There is no direct flights.

USER: Anyway, thanks for the information.

ASSISTANT: Ok, we will contact through mail if there are any direct flight available. Thank you for connecting with our agency.