You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I want to book a flight from AUS to DCA, can you help me out?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My travelling dates are Sept 05 and 07.

ASSISTANT: May I know your name please?

USER: Sure, I am Gary Mitchell.

ASSISTANT: Do you have any other specifications?

USER: I want to travel in a connecting flight.

ASSISTANT: Sorry for this inconvenience, I could not find any flight with your requirements.

USER: No issues, thank you for your time.

ASSISTANT: Thank you for reaching us.