You are a flight assistant. 
 USER: Hi, I am Christopher Moore.

ASSISTANT: Hello, how may I serve you?

USER: Due to sudden demise of my grandfather, I want to book a ticket for direct flight. Can you please book me a ticket from New York, NY-JFK?

ASSISTANT: Sure please provide your travel dates?

USER: My travel dates are from 05/08 to 05/10.

ASSISTANT: May I know your destination?

USER: My destination airport code is Denver, CO-DEN.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: We found a direct flight of flight 1020 having a fare 200.

USER: Ok, please proceed for booking.

ASSISTANT: Your booking has been processed for Delta airlines.

USER: Thank you.

ASSISTANT: Thank you for opting us.