You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am Michael Harris. Can you book a ticket from IAD to PHL?

ASSISTANT: Sure, can you please mention your connection limit?

USER: I am having meeting at 06/03, so I am planning to start on 06/02 and return back on 06/04. I want direct flight.

ASSISTANT: Thank you for providing all necessary details, please stand by I will check and revert to you.

USER: Sure.

ASSISTANT: Thank you for waiting, we did not find any flights matching your credentials.

USER: No issues. Thank you for checking.

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