You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you now?

USER: I need a flight ticket booking from DFW to PHX to attend a workshop, can you please help me with flight ticket booking?

ASSISTANT: Ok, may I know your planned dates for this journey?

USER: Thank you and my planned travel dates are July 28 to July 30.

ASSISTANT: Do you need a connecting flight for this journey?

USER: Yes, I am looking for a single connection flight.

ASSISTANT: May I know your other specifications too?

USER: I don't have any other specifications.

ASSISTANT: Please mention your good name.

USER: Sure, my name is Donald Edwards.

ASSISTANT: Donald Edwards, I am sorry to say that, there are no flights available for your journey.

USER: Sad to hear that one from your end, anyway thank you for your help.

ASSISTANT: Thank you for approaching our services.

USER: Welcome.

ASSISTANT: Have a nice day.