You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Myself Benjamin Edwards. I want to book a ticket from DEN to DTW.

ASSISTANT: Can I know your travel dates?

USER: My trip dates are from 07/05 to 07/07.

ASSISTANT: Ok. Sorry Edwards, there are no flights available on your request.

USER: Oik, thank you for your help.

ASSISTANT: Welcome.