You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you now?

USER: I am Jacob Taylor want to attend a Music festival at OAK, can you please help me in booking a flight ticket from LAX?

ASSISTANT: Sure, I am happy to help you with that. Can I have your travel dates please?

USER: My preferred travel dates are from Aug 17th to Aug 19th.

ASSISTANT: Ok, please let me know your preferable timings of journey.

USER: I would like to depart in the evening.

ASSISTANT: Do you planning to travel in single connecting flight or direct one?

USER: I am planning to travel in direct flight.

ASSISTANT: Do you want any specific airlines to travel?

USER: No.

ASSISTANT: Sorry Jacob Taylor, no flight is available to you on your dates.

USER: Ok, no problem. Thank you for checking.

ASSISTANT: Thank you for choosing us, have a good day.