You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Barbara Lewis. I want to celebrate a Flowers Festival in SFO, can you please help me in booking a flight ticket from LGA?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: I would like to fly on Mar 23 and return on Mar 25.

ASSISTANT: Do you have any particular time for departing and returning?

USER: I would like to depart in morning time.

ASSISTANT: May I know your other specifications?

USER: I need a direct flight.

ASSISTANT: Sorry, no flight is available for you as per your requests.

USER: Not an issue. Thank you.

ASSISTANT: Thank you.