You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I would like to visit New York, can you please reserve a flight ticket from SFO to JFK?

ASSISTANT: Can I know your travelling dates?

USER: Thank you for accepting my request, my boarding is on Apr 19 and please book my return ticket on Apr 21.

ASSISTANT: Do you have any preference?

USER: I would like to depart at afternoon time.

ASSISTANT: Is there any connection limit?

USER: Yes, I would prefer single connection.

ASSISTANT: Let me know your name.

USER: Sure, my name is Benjamin Jones.

ASSISTANT: Found ticket with American airlines for price 100 having flight number 1015.

USER: I am ok with this flight, you can proceed with booking now.

ASSISTANT: Ticket is booked.

USER: Thank you for your assistance.

ASSISTANT: Thank you.