You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you please help me to book a flight to travel from DEN to DFW?

ASSISTANT: Sure, I am happy to help you with flight ticket booking and can I know your travelling dates?

USER: My travel dates are June 22nd and 24th.

ASSISTANT: Do you have any connection limit?

USER: I am fine with maximum one connection.

ASSISTANT: Do you have any other necessities that has to be met?

USER: I want to return back in the evening time.

ASSISTANT: Can I know your name please?

USER: My name is Susan Rodriguez.

ASSISTANT: Sorry, there is no flight obtained on your travel dates to book the flight ticket for your journey.

USER: No problem, thank you for the information.

ASSISTANT: You are welcome and thank you for reaching us.