You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Nicholas White. I want to book a flight ticket from DFW to DCA, can you please help me?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: My travelling dates are Dec 31 and Jan 02.

ASSISTANT: Please wait for a moment.

USER: Sure, I will wait for your response.

ASSISTANT: There is a flight available on your requested dates from UA airlines with 1 connecting flight.Shall I confirm your booking?

USER: That's fine, please book.

ASSISTANT: Your ticket is booked with flight 1007.

USER: Thank you for your service.

ASSISTANT: You are most welcome.