You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you now?

USER: I want to book a flight ticket from AUS to DEN. Can you make a reservation for me?

ASSISTANT: Yes, I will definitely try my best to help you in booking your flight ticket. Could you please provide your planned dates of journey?

USER: Ok, my planned trip dates are on Feb 08 and return on Feb 10.

ASSISTANT: Do you have any limit on number of connections?

USER: I need a single connecting flight.

ASSISTANT: Let me know about your other requirements.

USER: I want to return in the afternoon time.

ASSISTANT: Can I know your good name to proceed further?

USER: Ok, I am Robert Martinez.

ASSISTANT: Sorry, we have not found any flights running on your desired routes.

USER: Ok, not a problem. Thank you for your help.

ASSISTANT: Thank you for reaching us.