You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello.

USER: I am Margaret Harris.

ASSISTANT: How can I serve you?

USER: Please, help me in booking me a round trip for enjoying in beer festival.

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: May I know your travelling dates? Can you share me your airport codes?

USER: I will fly on 06/28 and recur on 06/30. My airport for round trip is Minneapolis, MSP.

ASSISTANT: Do you want connecting flight or direct flight?

USER: I need a direct flight.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Thanks for waiting.

USER: Ok.

ASSISTANT: There is no direct flight available to your destination.

USER: Ok, I will choose other airline. Thank you.

ASSISTANT: Thank you for availing us.