You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Please help me out in booking the ticket from DCA to IAD.

ASSISTANT: Sure. Tell me your travel dates please?

USER: My trip dates will be May 17 to May 19.

ASSISTANT: May I know your name please?

USER: Samantha Green.

ASSISTANT: Are you looking for a stopover in your journey?

USER: I need a connecting flight.

ASSISTANT: Any other preferences?

USER: No.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: Thanks for your patience. I have found Delta airlines which is a stopover flight.

USER: Please proceed.

ASSISTANT: Yes, I have confirmed your flight ticket in flight number 1010.

USER: Thank you.

ASSISTANT: Thank you.