You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Stephanie Johnson here.

ASSISTANT: How can I assist you at this moment?

USER: Can you help me in ticket booking from CLT to DEN?

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

USER: My travelling dates are from 05/26 to 05/28.

ASSISTANT: Wait a moment please.

USER: Ok.

ASSISTANT: Stephanie Johnson, there are no flights available on your requested dates.

USER: That's finr.

ASSISTANT: Thank you for contacting us.

USER: Most welcome.