You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I  help you?

USER: Karen Evans here. I would like to book a ticket from DCA to CLT.

ASSISTANT: Your travelling dates please?

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

ASSISTANT: Here is a connecting flight with flight number 1001 and fare is 100, providing ticket in economy class. Shall I proceed with booking?

USER: Please proceed with booking.

ASSISTANT: Your booking is done in Delta airlines.

USER: Thank you for your help.

ASSISTANT: Thank you.