You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Angela Moore. Can you please help me in booking a flight ticket?

ASSISTANT: Sure, can you please share your travel dates?

USER: I will start on Sep 15 and need to return on Sep 17.

ASSISTANT: Could you please help me with the airport codes?

USER: Sure, I will start from LAS to DEN.

ASSISTANT: Do you have any class preferences?

USER: I am comfortable with any of the class.

ASSISTANT: Angela, there is a flight available with price 100 and the connection is 0 with Frontier airline. Would you like me to proceed with the booking?

USER: Please proceed with the booking.

ASSISTANT: Your booking is confirmed with 1011 flight number.

USER: Thank you for booking the flight ticket.

ASSISTANT: Thank you for reaching us.