You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I serve you?

USER: Please make a reservation with the name of Sarah Brown from MSP.

ASSISTANT: Sure, May I know the destination code?

USER: Destination airport code is IAD.

ASSISTANT: Please help me with your travelling dates.

USER: My travelling dates are Mar 24 and Mar 26.

ASSISTANT: Do you have any connection limit?

USER: Yes, I am looking for a flight with one connection.

ASSISTANT: Is there any other requirements?

USER: No.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for opting us.