You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Christopher Hall.

ASSISTANT: How can I assist you at this moment?

USER: Can you help me booking flight from DTW to DEN to meet my colleagues?

ASSISTANT: Sure, can you please provide your travelling dates to proceed further?

USER: My travelling dates are 02/17 and 02/19.

ASSISTANT: Wait a moment please.

USER: Provide flight with 0 connection.

ASSISTANT: Christopher Hall, there are no services available with 0 connection limit on this route.

USER: Oh! It's ok no problem, thank you for your services.

ASSISTANT: Thank you for contacting us.