You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: This is Sarah Taylor, can you help me to book a flight ticket from IAD to JFK?

ASSISTANT: Sure, may I know your travel dates?

USER: I am travelling from Apr 15 to Apr 17.

ASSISTANT: Ok, do you have any preferences?

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

ASSISTANT: Ok, JetBlue is providing the flight with single connection and the flight fare is 100. Can I proceed?

USER: Please proceed.

ASSISTANT: Your booking is confirmed.

USER: Thank you.

ASSISTANT: Thank you for choosing us.