You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you today?

USER: Can you aid me to book a ticket from DEN to OAK?

ASSISTANT: Sure, please share me your trip dates.

USER: My trip dates are June 24 and June 26 respectively.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I prefer for single connecting flight.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: Richard Lee here.

ASSISTANT:  Would you let us know if you have any other preferences?

USER: No.

ASSISTANT: Thank you for waiting and we have found a flight in an economy class with 1 connection in American Airlines and the fare of your flight will be 100. Do you like me to proceed your booking with this flight?

USER: Please proceed for booking.

ASSISTANT: Your booking is done with flight number 1021.

USER: Thank you.

ASSISTANT: Thank you for opting us.