You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am George Perez and I want to book a flight ticket to WA-SEA from DC-IAD.

ASSISTANT: Ok, Kindly mention your travelling dates?

USER: My travelling dates are 07/23 and 07/25.

ASSISTANT: Do you have any price limit?

USER: I need a direct flight under 200.

ASSISTANT: Ok, Wait a while.

USER: Ok.

ASSISTANT: We are sorry to inform you that, we did not find any flights with your preferred dates.

USER: No issue. Thank you for your response.

ASSISTANT: Thank you for approaching us, Have a great day.