You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: Can you help me in booking a flight ticket from ORD to DFW?

ASSISTANT: When you are willing to travel?

USER: I want to travel on 11/25, and return on 11/27.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any airline preference?

USER: I prefer for normal cost airline.

ASSISTANT: May, I know your good name?

USER: I am Raymond Allen.

ASSISTANT: We found 1017 Delta airlines with single connection with price 100.

USER: Proceed with the booking.

ASSISTANT: Your, booking has been confirmed.

USER: Thanks for the service.

ASSISTANT: Thank you for reaching us.