You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Charles Gonzalez. I want to book a ticket from MSP to DCA, please look for any airlines providing service in this route.

ASSISTANT: May I know the dates of your journey?

USER: My travelling dates are 01/23 to 01/25.

ASSISTANT: There is  a flight with number 1026 and airline is Spirit. Can I book it?

USER: Please book this flight ticket.

ASSISTANT: Your ticket is booked. Have a  safe trip.

USER: Thank you for your help.

ASSISTANT: Welcome.