You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to visit Dallas, can you please book me a ticket from JFK to DFW?

ASSISTANT: Sure, do you have any limits on number of connections?

USER: Yes, I have one connection limit for this trip.

ASSISTANT: Can you please share your travelling dates?

USER: I am planning my journey on the dates of Jan 19 and Jan 21.

ASSISTANT: Do you have any other requirements?

USER: Please ensure that depart flight is in the evening time.

ASSISTANT: Ok, may I know your name?

USER: My name is Ronald Williams.

ASSISTANT: We found an UA airlines with single connection and your depart time will be on 23:00 PM. Shall I proceed?

USER: Please book my ticket in this flight.

ASSISTANT: Your ticket has been confirmed with flight number 1010.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for choosing us.