You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: Can you book my direct flight from DCA?

ASSISTANT: Sure, can I know your preferable dates?

USER: My travelling dates are from 01/13 to 01/15.

ASSISTANT: Can I know your destination airport code?

USER: My destination code is JFK.

ASSISTANT: I am sorry to inform you that there are no flights.

USER: It's ok. I will check with another agency.

ASSISTANT: Can I know your name for documentation?

USER: Myself Samantha Phillips.

ASSISTANT: Thank you, have a good day.

USER: Thank you for your time.