You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Paul Wilson.

ASSISTANT: How can I serve you?

USER: Can you please help me in booking my flight ticket from DTW to CLT?

ASSISTANT: Sure, I can help you. Can you please let me know your travelling dates?

USER: My travelling dates are 09/21 and 09/23. I need a connecting flight.

ASSISTANT: Ok. We found a UA airline flight number:1020 and the price is 100.

USER: Ok, proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you.