You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Sharon Brown.

ASSISTANT: How can I assist you today?

USER: Will you help me in booking the flight ticket from SEA to IAD?

ASSISTANT: Please share your trip dates.

USER: My travelling dates are Mar 24 and Mar 26.

ASSISTANT: Do you need any specifications?

USER: I need a flight with single connection and my class preference is business.

ASSISTANT: Sorry to inform you, there are no active flights found under your name.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for opting us.