You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Ryan Anderson. I need to travel to LGA, can you help me to book a flight ticket from DFW?

ASSISTANT: Sure, help me with the trip dates?

USER: I am travelling from May 31 to June 02.

ASSISTANT: Do you have any class preferences?

USER: No, I am comfortable with any class.

ASSISTANT:  We found an airline: AA, flight number: 1000 and price is 100 with one connection. Shall I proceed to book?

USER: Please proceed.

ASSISTANT: Your flight ticket has been reserved in an economy class.

USER: Thank you.

ASSISTANT: Thank you for choosing us.