You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Kenneth Collins. Can you help me to book a flight from DEN to HOU?

ASSISTANT: Let me know your travelling dates.

USER: My travelling dates are 11 and 13 of Dec.

ASSISTANT: Do you have any preference?

USER: I need a connecting flight.

ASSISTANT: Found ticket with airline JetBlue for price 100 having flight number 1008.

USER: Please proceed to booking.

ASSISTANT: Ticket is booked.

USER: Thanks for helping me.

ASSISTANT: Thanks.