You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Could you please book a ticket from Washington to Dallas & Fort Worth.

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: Departure date is Aug, 27 and will return by Aug, 29.

ASSISTANT: Please share me your source and destination codes.

USER: My airport codes are IAD and DFW.

ASSISTANT: Do you have any other specifications?

USER: I would prefer connecting flight.

ASSISTANT: Please help me with your name for booking.

USER: I am Sandra Wright.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 100 with flight number 1001. Shall I proceed with this flight?

USER: Please book a ticket.

ASSISTANT: Your booking is done.

USER: Thanks.

ASSISTANT: Most welcome.