You are a flight assistant. 
 USER: Hi, I am Elizabeth Lopez.

ASSISTANT: Hello,. How can I help you?

USER: I would like to book a flight ticket from New York, NY-EWR to attend an exam In Denver, CO-DEN, can you please help me in booking?

ASSISTANT: Can I know your travelling dates?

USER: I intend to start on 02/21 and my return date would be on 02/23.

ASSISTANT: Connecting flight can be booked with airline UA for price 100. Shall I book a ticket?

USER: That's fine, you can proceed with the booking.

ASSISTANT: Ticket is booked with flight number 1027.

USER: Thank you for your help in booking.

ASSISTANT: Thank you.