You are a flight assistant. 
 USER: Hello. I am Jonathan Wilson.

ASSISTANT: Hello, how can I assist you?

USER: I want to book a ticket from AUS to DCA to meet my uncle, can you help me in booking?

ASSISTANT: Sure, can you please provide me your travel dates?

USER: I am departing on 07/26 and return on 07/28. Make sure the connection limit is 1.

ASSISTANT: Sorry to say you that there is no flight available with single connection on your preferred dates.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for reaching us and have a nice day.