You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I need to schedule my trip to travel Chicago this month. Can you please help me in reserving the ticket from DEN to ORD?

ASSISTANT: Yes, can you tell me your travelling dates?

USER: I would like to travel on Dec 20 and again I will retrieve on Dec 22.

ASSISTANT: Do you have any other preferences?

USER: I am planning to travel in single connection flight.

ASSISTANT: Give me a moment.

USER: Sure, I will wait for your response.

ASSISTANT: I have found an economy class ticket with a price of 200 and 1 connection.

USER: Yes, please go ahead and reserve the ticket.

ASSISTANT: Can I know your name for booking?

USER: Myself Samuel Jackson.

ASSISTANT: Your ticket has been booked.

USER: Thank you very much for reserving the ticket.

ASSISTANT: Thank you for reaching us.