You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: My name is Jonathan Lopez, I want to book a flight from Austin, TX-AUS to meet my uncle. Can you book a connecting flight for me?

ASSISTANT: Sure, may I know your destination?

USER: My destination is TX-DFW.

ASSISTANT: Could you please provide me your depart and return dates?

USER: I will depart on 07/28 and return on 07/30.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there are no flights found with your given dates.

USER: Thank you for the information.

ASSISTANT: Thank you for opting us.