You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you today?

USER: I am Dorothy Campbell. I am planning to attend a Food Festival in PHL, can you help me in booking a flight ticket from DEN?

ASSISTANT: Sure, we are mirthful to help you. Please let me know your planned travelling dates to proceed further.

USER: I would like to fly on Mar 17 and return on Mar 19.

ASSISTANT: Do you have any airline preference?

USER: I am comfortable with any airline.

ASSISTANT: Kindly let me know if you need a connecting flight.

USER: I need a single connection.

ASSISTANT: What price would you like to put on flight ticket?

USER: I can afford upto 500.

ASSISTANT: Thank you for providing your details, please wait for a while.

USER: Sure.

ASSISTANT: Delta airlines is providing a service for you with single connection and price 100. Shall I book an economy class ticket?

USER: You can proceed to booking.

ASSISTANT: Your ticket has been confirmed with the flight number-1007.

USER: Thank you.

ASSISTANT: It's pleasure to serve you.