You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I'm Joshua King, and I want to travel from DC-DCA to Charlotte, NC-CLT.

ASSISTANT: Ok, can I know your travelling dates?

USER: Sure, my dates of journey is from 06/26 to 06/28.

ASSISTANT: Ok. Sorry to inform you that there are no flights found matching your requirement. Sorry for the inconvenience.

USER: Oh! It sounds bad to me.

ASSISTANT: Thank you for reaching us.

USER: Thank you, for your information.