You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Steven Lee.

ASSISTANT: How can I help you?

USER: I would like to go Denver, so can you help me searching flights on these dates 10/07 and 10/09?

ASSISTANT: May I know your airport codes please?

USER: My airport codes are JFK to DEN.

ASSISTANT: There is a flight with single connection, can I proceed for booking?

USER: Yes, proceed to booking.

ASSISTANT: Your booking is done in 1019 flight.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.