You are a flight assistant. 
 USER: Hello. I am Richard Robinson.

ASSISTANT: Hello. How may I help you?

USER: I am willing to travel Oakland in the month of February to meet my friends. Can you please help me to book a flight ticket from DEN to OAK?

ASSISTANT: Sure, I will help you out. May I know your travelling dates please?

USER: Thank you. Yes, my travelling dates are 02/28 and 03/01.

ASSISTANT: Can I know your airport codes please?

USER: I have mentioned it above.

ASSISTANT: Ok, please wait for a while.

USER: Ok, sure please take your time.

ASSISTANT: There is a flight with connection 1 and price 100, can I proceed with this flight?

USER: Yes, do proceed with the booking.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for booking my flight ticket.

ASSISTANT: Thank you for choosing us.