You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Jennifer Turner. I would like to travel from PHL to DEN. Can you please help me to book a ticket?

ASSISTANT: Sure, please provide your travelling dates.

USER: I want to start on Sept 1 to Sept 3.

ASSISTANT: Ok, Do you have any class preference?

USER: No.

ASSISTANT: Ok, Do you prefer direct flight or connected flight?

USER: I need a direct flight.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: Thank you for your time, No flights were found with your given details.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for availing us.