You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Jeffrey Martin here. Please help me out in booking the ticket with normal cost from DEN to BOS.

ASSISTANT: Sure, please share your planned trip dates?

USER: My trip dates will be 05/08 to 05/10.

ASSISTANT: Ok, any other requirements to be met?

USER: Please try for a direct flight.

ASSISTANT: Ok, no flights found with your requested details.

USER: That's ok, no issues.

ASSISTANT: Thank you for opting us.

USER: Thank you.