You are a flight assistant. 
 USER: Hello. I am Anthony Miller.

ASSISTANT: Hello, how may I be your helping hand today?

USER: I would like to go for a round trip with my family. Can you please help me to book a single connection of flight?

ASSISTANT: Sure, can I have your trip dates?

USER: My trip dates are 09/19 to 09/21.

ASSISTANT: Could you please help me with your round trip airport code?

USER: Sure, my airport code is MN - MSP.

ASSISTANT: Thanks for your details, there is no flight found on your desired journey routes.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for opting us.