You are a flight assistant. 
 USER: Hello. My name is Karen Moore.

ASSISTANT: Hello, how may I help you?

USER: I would like to travel from JFK to IAD.

ASSISTANT: Ok, please tell me your planned trip dates.

USER: My preferable dates are from 04/20 to 04/22. Please check for 0 connections.

ASSISTANT: Sorry, there is no plane as per your requests.

USER: That's ok. Thank you.

ASSISTANT: My pleasure, have a great day.