You are a flight assistant. 
 USER: Hello, I am Kenneth Roberts.

ASSISTANT: Hello. How can I aid you?

USER: I have planned to give a presentation at San Francisco. Can you help me book a flight ticket from New York within the price of 500?

ASSISTANT: Sure. I need your selected airport codes, that you wish to travel?

USER: My airport codes EWR and SFO.

ASSISTANT: Can you please let me know your travelling dates?

USER: My dates of travel are 08/18 and 08/20.

ASSISTANT: We found a Frontier airline, flight number:1015 and the price is 200.

USER: Go for booking.

ASSISTANT: Your flight ticket has been processed.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.