You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Donna Garcia. Can you please help me in booking a flight ticket from DCA to EWR?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: I want to fly on Sept 21 and return on Sept 23.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is a flight with price 100 and the connections 1 is available. Shall I confirm your ticket?

USER: Don't proceed to booking. I need a direct flight.

ASSISTANT: There is no flights found under your preferable details.

USER: Not an issue. Thank you.

ASSISTANT: Welcome, have a great day.