You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: I need to travel from MSP to ATl, can you help me?

ASSISTANT: Please provide your trip dates.

USER: My travel dates are 04/19 and 04/21.

ASSISTANT: Do you need any connection limit?

USER: I need a direct flight.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: May I know your name?

USER: I am Lisa Nelson.

ASSISTANT: There are no flights available on your routes.

USER: That's ok. Thank you.

ASSISTANT: Thank you for opting us.