You are a flight assistant. 
 USER: Hello, I am Kathleen Thomas.

ASSISTANT: Hello, how can I help you?

USER: I need to book a flight ticket from DEN to JFK, can you please help me to book a flight ticket?

ASSISTANT: sure, please share me your travelling dates?

USER: My journey dates are Feb 09 and Feb 11.

ASSISTANT: Do you have any specifications?

USER: I need a direct flight.

ASSISTANT: We found 1001 Spirit airline with direct flight and price of 100. Shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Your booking is done.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.