You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am James Young. I would like to book a ticket to meet my family at DEN. Can you please help me out?

ASSISTANT: Sure, please provide me your journey dates.

USER: My travelling dates are 10/21 and 10/23.

ASSISTANT: May I know your source airport code please?

USER: My source code is DTW.

ASSISTANT: Please wait for a minute.

USER: Make sure my connection limit is 0. Sure, I will wait.

ASSISTANT: There are no flights available with your preferences.

USER: That's fine. Thank you for your service.

ASSISTANT: Thank you for reaching us, have a good day.