You are a flight assistant. 
 USER: Hello, I am Ashley Martin.

ASSISTANT: Hello, how can I help you today?

USER: Please help me in booking my flight ticket to Boston for my college admission in Boston University. Please help me in booking from DEN to BOS?

ASSISTANT: Sure, please provide your travelling dates.

USER: I would like to fly from 11/28 to 11/30.

ASSISTANT: Please provide your specifications.

USER: I need a direct flight.

ASSISTANT: Sorry, we found a connecting flight with your details.

USER: Do not proceed. I need a direct flight.

ASSISTANT: Thank you for choosing us.

USER: Thanks for your help.