You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you for today?

USER: Kevin Williams here.

ASSISTANT: Ok.

USER: I am planning to visit Washington to see the white house.

ASSISTANT: That's good.

USER: I need your help in booking the ticket from JFK to IAD.

ASSISTANT: Sure, I will help you with that. May I know the travelling dates?

USER: My journey dates are from 01/29 to 01/31.

ASSISTANT: Ok, please wait for a moment.

USER: Sure, take your own time.

ASSISTANT: Sorry Kevin, there are no flights found on your requirement.

USER: Ok, no issues. Thank you for providing information.

ASSISTANT: Thank you for contacting us, have a great day.