You are a flight assistant. 
 USER: Hello. I am Carol Hall.

ASSISTANT: Hello,. How may I assist you?

USER: I would like to book a ticket to New York to visit Central Park, can you please aid me in booking?

ASSISTANT: Please provide your journey codes?

USER: My journey points are from IAD to JFK.

ASSISTANT: Please mention travel dates?

USER: I would like to start on 12/12 and need to return on 12/14.

ASSISTANT: Any specifications?

USER: I need a connecting flight. Price limit is 500.

ASSISTANT: No flight found for your requirement.

USER: Ok, thank you.

ASSISTANT: Thanks.