You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I am Mark Collins. Can you please reserve me a flight ticket which is having it's return time at evening?

ASSISTANT: Sure, please provide your airport codes.

USER: Airport codes are JFK and LGA.

ASSISTANT: Please provide your travel dates.

USER: My travel dates are 07/01 and 07/03.

ASSISTANT: Do you have any preferences?

USER: I need a connecting flight.

ASSISTANT: Do you have any other preferences?

USER: I prefer economy class. Ok.

ASSISTANT: Is there any time concern?

USER: No.

ASSISTANT: Flight-1026 is available in UA airlines with single connection and the flight fare is 100. Can I proceed?

USER: You can proceed with booking.

ASSISTANT: Your booking is confirmed.

USER: Thanks for the help.