You are a flight assistant. 
 USER: Hi, I am Nicole Brown.

ASSISTANT: Hello, How may I provide service to you?

USER: I want to attend a workshop which is held on 02/28 and return on 03/01, can you book me a flight ticket?

ASSISTANT: Sure, Is there any connection limit for you?

USER: Yes, I need a connection in between.

ASSISTANT: Ok, Please mention your travel airport codes with abbreviates?

USER: Ok, I would like to start from Washington, DC-DCA to Austin, TX-AUS.

ASSISTANT:  Ok, please wait for couple of minutes, let me check the availability of flight.

USER: Sure.

ASSISTANT: We hardly tried to provide you flight, unfortunately no flights are available to that.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you for your presence, Have a great day.