You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Can you please help me with booking a flight from LAX to OAK?

ASSISTANT: Sure, Can you please share your planned trip dates?

USER: My journey dates are from Feb 24 to Feb 26.

ASSISTANT: Do you have any connection limit?

USER: I need a direct flight.

ASSISTANT: Is there any class preference?

USER: Any class is ok but I will return in morning.

ASSISTANT: Are there any other requirements?

USER: No.

ASSISTANT: Please forward your name.

USER: My name is Christopher Green.

ASSISTANT: Sorry, there are no flights found on your specified trip dates.

USER: Oh! That's fine. Thank you for checking.

ASSISTANT: Thank you.

USER: Most welcome.