You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I want to fly to DC to visit Olympic National Park, can you please help me to book a flight ticket with single connection?

ASSISTANT: Sure, can I know the travel dates please?

USER: Sure, I intend to start my journey on 08/26 and my return date will be on 08/28.

ASSISTANT: May I know your name please?

USER: I am Jessica Evans.

ASSISTANT: Could you please provide the airport codes?

USER: My source airport code is PHX and my destination airport code is IAD.

ASSISTANT: Do you have any requirements?

USER: No more specifications for this trip.

ASSISTANT: There is a connecting flight in United airlines, can I book it?

USER: Yes, you can book the ticket.

ASSISTANT: Your ticket has been booked with flight number 1005.

USER: Thank you for your assistance in booking.

ASSISTANT: Thank you for approaching us.