You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to book a ticket from LGA to DFW to attend seminar, can you help me in booking?

ASSISTANT: Can I know your travelling dates?

USER: I am departing on Apr 02 and return on Apr 04.

ASSISTANT: Do you have any preference?

USER: I prefer a connecting flight.

ASSISTANT: Let me know your name.

USER: I am Jeffery Mitchell.

ASSISTANT: Found ticket with American airlines for price 200 having flight number 1020.

USER: Please proceed for booking.

ASSISTANT: Ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thank you.