You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Can you please help me to book a flight ticket from MSP to DCA?

ASSISTANT: May I know your trip dates?

USER: My trip dates are Jan 31 to Feb 2.

ASSISTANT: Do you prefer any specifications?

USER: I need a direct flight.

ASSISTANT: May I know your name?

USER: Joseph Rodriguez here.

ASSISTANT: There is a direct flight in Spirit airlines with the fare 100.

USER: Ok, please proceed.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thank you.