You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: Can you please help me to book flight ticket from SFO to LAS?

ASSISTANT: Sure, can you share your trip dates?

USER: My trip dates are Feb 07 and Feb 09.

ASSISTANT: Do you have any preferences?

USER: I need a direct flight to travel.

ASSISTANT: There is a direct flight with number 1026 in airline Delta, the fare is 100 in economy class. Can I book it?

USER: Sure, proceed for booking.

ASSISTANT: May I know your name?

USER: Brian White here.

ASSISTANT: Your ticket is reserved, the depart time is 16:00 PM and return time is 6:00 AM.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.