You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How may I assist you today?

USER: Can you please help me in booking my flight ticket from AUS to HOU?

ASSISTANT: Sure, I will help you.  Please help me with your name.

USER: Myself, Jason Thomas.

ASSISTANT: Please help me with your planned travelling dates.

USER: My planned travel dates are Mar 21-23.

ASSISTANT: Do you need a break in between your journey?

USER: I prefer a connecting flight.

ASSISTANT: Do you have any other preferences in your journey?

USER: No.

ASSISTANT: Please allow me a minute.

USER: Ok.

ASSISTANT: Jason Thomas, I am really sorry to inform you that there are no flights available for your journey.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for understanding. Thank you for reaching us. Have a great time.