You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am planning to visit Philadelphia, can you please book me a ticket from HOU to PHL?

ASSISTANT: Sure, please share your journey dates?

USER: My planned dates of journey are Dec 16 and Dec 18.

ASSISTANT: Do you have any specifications?

USER: I prefer to return in evening flight for this trip.

ASSISTANT: Is there any class preferences?

USER: No, thanks for asking.

ASSISTANT: May I know your good name?

USER: My name is Barbara Adams.

ASSISTANT: We found a direct flight in American Airlines, flight number is 1006 and price is 600 business class arrival time at evening 1:00 hours.

USER: Please book my ticket in this flight.

ASSISTANT: Your ticket has been booked.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for choosing us.