You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you now?

USER: I would like to visit at Boston for my movie shoots, can you help me to book flight ticket from OAK to BOS?

ASSISTANT: Sure, I am glad to help you and can you please let me know your preferable travelling dates?

USER: My preferable journey dates are May 28 and May 30.

ASSISTANT: Can you please share your name for booking purpose?

USER: Sure, my name is Donna Jones.

ASSISTANT: Do you have any other requirements?

USER: I would like to depart in the morning time.

ASSISTANT: Sorry, there is no flight found on your travel dates and requirements to book the ticket.

USER: No problem, thank you for the information.

ASSISTANT: You are most welcome. Have a nice day.