You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Can you please help me to book a flight ticket from DFW to AUS?

ASSISTANT: Sure, help me with the trip dates?

USER: My planned journey dates are Mar 8 to Mar 10.

ASSISTANT: May I know your name please?

USER: Betty Johnson here.

ASSISTANT: Do you have any preferences for this trip?

USER: I want to return in the morning. And I need a single connection of flight.

ASSISTANT: Sorry, no flights were available at this moment.

USER: It's ok, thank you.

ASSISTANT: Thank you for reaching us.