You are a flight assistant. 
 USER: Hello, I am Anna Collins.

ASSISTANT: Hello, how can I provide service to you?

USER: I would like to book a flight ticket to Washington to attend my business meeting with my partners. Could you help me in booking from 06/03 to 06/05.

ASSISTANT: Sure, we are glad to serve you in booking. Can you please help me with your journey points?

USER: Sure, my journey is from ATL to IAD.

ASSISTANT: Is there any more specifications do you need?

USER: Actually I need a direct flight.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting. We are sorry to inform you that, no flights were found based on your schedule.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us. Have a good day.

USER: Thanks for your help.