You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: Myself Betty King. Can you please help me in booking a flight ticket from MSP to IAD locations? My travelling dates are from 05/25 and 05/27.

ASSISTANT: Ok, please allow me a moment.

USER: Sure.

ASSISTANT: Sorry, there is no flight as per your request.

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

ASSISTANT: My pleasure.