You are a flight assistant. 
 USER: Hello. I am Barbara Carter.

ASSISTANT: Hello, how can I address you?

USER: I would like to visit Millennium Park with my friends, can you please help me to book my ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: I want to travel from SEA to ORD. And my travel dates are from 04/21 to 04/23.

ASSISTANT: Ok. The flight number 1002 of JetBlue airline is available.

USER: Sure, you can proceed with the booking.

ASSISTANT: Ok. Your ticket is booked successfully.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you.