You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Andrew Lopez. Can you help me booking a flight ticket from DFW to ORD?

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

USER: I will start on June, 15 and return on June, 17.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: Andrew Lopez, there is a flight available with price 200 and the connection is 1 with UA airline. Would you like me to proceed with the booking?

USER: Please proceed with the booking.

ASSISTANT: Your booking is confirmed with 1010 flight number.

USER: Thank you for your kind service.

ASSISTANT: You are welcome. Thank you for reaching us.