You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: I want to fly from IAD to ATL. Can you check the flight availability on that root?

ASSISTANT: Sure, I will help you with that. Can you please mention your preferable travel dates?

USER: My planned travel dates are 01/21 and 01/23.

ASSISTANT: May I know your name for further process?

USER: sure, Larry Baker here.

ASSISTANT: Is there any additional preferences do you have?

USER: I want a flight with maximum connection of 0.

ASSISTANT: Do you have any another specifications?

USER: No more, thank you.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: No issues, thank you for the information.

ASSISTANT: Thank you for reaching us.