You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I serve you?

USER: I am Ronald Taylor. I want to book a connecting flight ticket to Minneapolis as I am invited for a film festival.

ASSISTANT: Ok. May I know your scheduled dates?

USER: My preferred travelling dates are from 11/05 to 11/07.

ASSISTANT: Can you share your airport codes?

USER: My origin airport code is DC- IAD and Dest airport code is MN- MSP.

ASSISTANT: Do you have any specifications?

USER: I need the ticket within price 500.

ASSISTANT: Unfortunately, There is no flights available with your details.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you.