You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How may I aid you?

USER: Can you please help me in booking my flight ticket from DEN to PHL?

ASSISTANT: Sure, may I know your travelling dates?

USER: My planned travel dates are Sept 09-11.

ASSISTANT: Do you have any connection limit?

USER: I prefer to fly in connected flight.

ASSISTANT: Any other preferences?

USER: I want to return in the afternoon.

ASSISTANT: May I know your name?

USER: Myself, Daniel Campbell.

ASSISTANT: You have a connecting flight 1001 in UA airlines which returns at 14:00 hours and price 100, Shall I proceed?

USER: Ok, please go ahead.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for your help.

ASSISTANT: Thank you.