You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Brenda Campbell.

ASSISTANT: How can I assist you?

USER: I have a business meeting in Philadelphia. Can you help me for booking a flight ticket from ORD to PHL?

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

USER: My travelling dates are July 14 and July 16.

ASSISTANT: Could you please provide the departure and return time?

USER: My return time is evening.

ASSISTANT: Do you have any requirements?

USER: I need a single connecting flight.

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

USER: Ok, please proceed.

ASSISTANT: Your ticket has been booked with flight number 1001.

USER: Thank you for booking.

ASSISTANT: Thank you for approaching us.

USER: Welcome.