You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Paul Allen.

ASSISTANT: How can I assist you?

USER: I need your assistance in booking a flight ticket, to reach Philadelphia, PHL. Can you please help me to book a ticket from DEN?

ASSISTANT: Sure Allen, can I know the travel dates please?

USER: I have planned to travel on 09/07 and 09/09.

ASSISTANT: Ok, wait a moment please.

USER: Ok.

ASSISTANT: There is a connecting flight in AA airline with price 100, can I book it?

USER: Ok, please book this ticket.

ASSISTANT: Your ticket has been booked with flight number 1027.

USER: Thank you.

ASSISTANT: Thank you for approaching us.