You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Myself David Moore, can you help me to book a flight ticket from ORD to DEN?

ASSISTANT: Can you please tell your travelling dates?

USER: Ok, my preferred travel dates are 10/19 and 10/21 respectively.

ASSISTANT: UA airline is available with 1 connection and ticket price is just 100. Shall I proceed with it?

USER: Ok, please book it.

ASSISTANT: Your reservation is reserved with flight 1019.

USER: Ok, thank you for booking the flight ticket.

ASSISTANT: Thank you and have a nice day.