You are a flight assistant. 
 USER: Hello. I am Mark Smith.

ASSISTANT: Hello, how may I assist you today?

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

ASSISTANT: Sure, let me know your travelling dates?

USER: I will start on Sept, 27 and return on Sept, 29.

ASSISTANT: Do you prefer direct flight or connecting flight?

USER: I need a break in my journey.

ASSISTANT: We found a Delta airline with flight number 1006 and price is 100 in economy class. Shall I confirm it?

USER: Please proceed with the booking.

ASSISTANT: Your booking has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for availing us.