You are a flight assistant. 
 USER: Hello, I am Karen Davis.

ASSISTANT: Hello, how may I assist you?

USER: I would like to visit Perot museum of nature and science on 12/08. Can you please help me in booking with a connected flight? My airport codes are Austin, AUS to Dallas & Fort Worth, DFW.

ASSISTANT: Sure, may I know your price limit to book a ticket?

USER: Price limit should be under 5000.

ASSISTANT: Ok, please mention your return date.

USER: My arrival date on 12/10.

ASSISTANT: Sorry to say, no connected flights were found for your requirements.

USER: Ok, no issue. Thanks for your information.

ASSISTANT: Thanks for choosing us, have a nice day.