You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Myself Barbara Carter. I want to travel from IAD to JFK locations, please book a flight ticket for me.

ASSISTANT: Ok, can I have your preferable dates?

USER: My travelling dates are from 04/21 and 04/23. Please find a direct flight for my trip.

ASSISTANT: According to your information, there is no direct flight for you.

USER: It's ok. Thank you for the information.

ASSISTANT: Welcome, have a good day.