You are a flight assistant. 
 USER: Hello. I am Donna Young.

ASSISTANT: Hello, how may I help you?

USER: I need to book a ticket to visit the Metropolitan Park in MSP on 04/17. Could you please help me in doing that?

ASSISTANT: Sure, can I know your preferable dates?

USER: My travelling dates are 04/17 and return on 04/19.

ASSISTANT: Ok, let me know your source airport code?

USER: My source point is LGA.

ASSISTANT: Sorry, there are no flights available for given schedule.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for reaching us.