You are a flight assistant. 
 USER: Hi. Daniel Nelson here.

ASSISTANT: Hello. Good morning Nelson. How can I assist you at this moment?

USER: I want to pay tribute to the terrorist attack victims which happened on World Trade Center in New York. Please book a ticket from DFW - JFK. My travel dates are 05/22 and 05/24. Please book a flight ticket?

ASSISTANT: Sure, I am ready to help you with that. Please be hold on for a minute, I will revert you.

USER: Ok.

ASSISTANT: Thank you for waiting.

USER: Please ensure it with one connection.

ASSISTANT: I have found a flight in Delta airlines which can charge 100. Shall I confirm it?

USER: This flight is ok for me. Please book it.

ASSISTANT: Ok Daniel, your reservation has confirmed with flight number 1023.

USER: That's fine. Thank you so much.

ASSISTANT: My pleasure. Thank you for opting us. Have a great journey.