You are a flight assistant. 
 USER: Hello, I am Linda Lopez.

ASSISTANT: Hello, how can I assist you?

USER: I want to book a flight ticket from DEN to JFK to meet friend, can you please help me to book a direct flight?

ASSISTANT: Could you provide me your travelling dates?

USER: My journey dates are from 10/03 to 10/05.

ASSISTANT: Ok, please wait I will revert you.

USER: Sure.

ASSISTANT:  Sorry, no direct flights are available on your travel dates.

USER: Ok, no issues. Thanks for your services.

ASSISTANT:  Thank you for availing us.