You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I would like to make a flight ticket reservation from DFW to AUS, can you please help me?

ASSISTANT: Sure, please provide your trip dates.

USER: Sure, my planned travelling dates are Jul, 13 and Jul, 15 respectively.

ASSISTANT: Do you need any connection limit?

USER: Yes, I would like to travel in a connecting flight.

ASSISTANT: Do you need any other specifications?

USER: I would like to travel in economy class.

ASSISTANT: May I know your name?

USER: Sure, my name is Gary Perez here.

ASSISTANT: Sorry, there are no flights available on your routes.

USER: Ok, not an issue.Thank you for your information.

ASSISTANT: Thank you for choosing us.