You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Please help me to book a flight ticket from MSP to DCA.

ASSISTANT: Sure, let me know your travelling dates.

USER: Oct, 7 and Oct, 9 are my travelling dates.

ASSISTANT: Do you want connecting flight or direct flight?

USER: I am comfortable with any number of connections.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your name please?

USER: Sandra Phillips here.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for opting us.