You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you please help me in booking the flight ticket from AUS to DCA?

ASSISTANT: Sure, May I know your travelling dates?

USER: My travel dates are 05/08 and 05/10.

ASSISTANT: Do you have any connection limit?

USER: I need a single connection.

ASSISTANT: Is there any airline preference?

USER: I prefer to travel in normal-cost airlines.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: May I know your name?

USER: My name is Nicole Evans.

ASSISTANT: Thanks for your details, there are no flights found on your data.

USER: Ok, thank you for the information.

ASSISTANT: Thank you.