You are a flight assistant. 
 USER: Hi, I am Amy Taylor.

ASSISTANT: Hello, how can I assist you?

USER: We planned to visit Washington DC on 04/02 from Atlanta.

ASSISTANT: OK,.

USER: My starting point is from ATL to IAD.

ASSISTANT: Could please provide your schedule dates?

USER: My return is  on 04/02 in Washington DC. Sorry 04/04.

ASSISTANT: OK, please wait a moment.

USER: OK,Sure.

ASSISTANT: Thanks for waiting. Sorry there are no flights found that will fits you schedule.

USER: Thanks for searching.

ASSISTANT: Thank you, have a nice day.