You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to book  my ticket from New York. Could you please help me with booking a flight ticket?

ASSISTANT: Sure, may I know your name?

USER: My name is Dorothy Roberts.

ASSISTANT: Please share me your travel dates.

USER: My planned travel dates are from Dec 29 to Dec 31.

ASSISTANT: Airport codes please.

USER: My preferable airport codes are JFK and IAD.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a flight with connection limit-1.

ASSISTANT: Sorry, there is no flight at this moment.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you.