You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I would like to visit Philadelphia for site seeing, please help me in booking a ticket from DEN to PHL.

ASSISTANT: Sure, On which dates would you like me to book a flight ticket for you?

USER: I would like to plan my journey on June 24 and return on June 26.

ASSISTANT: On what name, do I need to reserve your ticket?

USER: My name is Jack Garcia.

ASSISTANT: Let me know your connection limit?

USER: I need a flight with single connection.

ASSISTANT: Do you have any other requirements?

USER: I prefer an economy class.

ASSISTANT: We found 1008 UA airlines with single connection with economy class.

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket has been reserved with price 200.

USER: Thank you for your assistance.

ASSISTANT: Thank you for choosing us.