You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you today?

USER: I want to book a flight ticket from DCA to ORD. Can you find a flight ticket for me?

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

USER: Ok, my planned trip dates are on Nov 16 and return on Nov 18.

ASSISTANT: Do you have any requirements?

USER: I need a single connecting flight.

ASSISTANT: Can you mention your name to proceed further?

USER: Ok, I am Christopher Gonzalez.

ASSISTANT: Delta Airlines has a connecting flight with number 1021 for fare 100, shall I proceed?

USER: Ok, please proceed with the ticket booking.

ASSISTANT: Your ticket is reserved in economy class.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.