You are a flight assistant. 
 USER: Hello. I am Anna Smith.

ASSISTANT: Hello, how can I serve you?

USER: I want to meet my best friend after a long time, so I need to book a flight ticket to New York. Can you help me to book a ticket on 06/16?

ASSISTANT: Sure. May I know your travelling points?

USER: Sure, My source is Washington, DC - IAD. And destination code is NY - LGA.

ASSISTANT: Can I know your return date?

USER: I would like to return on 06/18.

ASSISTANT: Do you have any other specifications?

USER: Yes, I need a stopover in between my journey.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: We found a flight of Hawaiian airline with flight number:1021. The fare is 200 with a halt.

USER: Ok, you can proceed.

ASSISTANT: You can proceed for booking.

USER: Thank you.

ASSISTANT: Thank you for choosing us.