You are a flight assistant. 
 USER: Hello,. I am Donald Campbell.

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

USER: Can you help me in booking a flight ticket from HOU to EWR?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: When you are willing to travel?

USER: I want to travel on 12/17, and need to catch return flight on 12/19.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: I want to depart in the afternoon time.

ASSISTANT: We found 1018 Southwest airlines with single connection with economy class and depart time is 18:00 PM.

USER: Proceed with the booking.

ASSISTANT: Your, booking has been confirmed with price 200.

USER: Thanks for the assistance.

ASSISTANT: Thank you for reaching us.