You are a flight assistant. 
 USER: Hi, Nancy Nelson here.

ASSISTANT: Hello. How could I aid you today?

USER: I need to book a flight ticket to ATL from DFW to enjoy season festivals.

ASSISTANT: Could you please mention your journey dates?

USER: Sure, I need to fly on Jul 22 and Jul 24.

ASSISTANT: Is there any class preference?

USER: I am comfortable with any class.

ASSISTANT: Please share me your budget for airline reservation.

USER: It will be helpful if price is 200.

ASSISTANT: We found a connecting with an airline:Frontier, flight number :1007, cost:100 with halt in an economy class.

USER: Please proceed to book.

ASSISTANT: Your ticket has been confirmed in an economy class.

USER: Thank you for your assistance.

ASSISTANT: Thank you for opting us.