You are a flight assistant. 
 USER: Hello, I am Donna Allen from Denver.

ASSISTANT: Hello,. How can I help you?

USER: I would like to visit Oakland museum of California with my coworkers, will you aid me in booking a flight from DEN?

ASSISTANT: Please help me with your travel dates.

USER: Sure, my travel dates are 07/27 and 07/29.

ASSISTANT: Can I know your destination airport code?

USER: Ok, my destination airport code is OAK.

ASSISTANT: Connecting flight can be booked with airline Hawaiian for price 200. Shall I book a ticket?

USER: Ok, please proceed to book.

ASSISTANT: Ticket is booked having flight number 1006.

USER: Thank you.

ASSISTANT: Thanks.