You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be at your service today?

USER: I need an economy class flight to IAH from SEA to attend a workshop. Can you help me in booking a flight ticket?

ASSISTANT: Sure, we are here to help you, please let me know your journey dates.

USER: Thank you for considering my request. My journey dates are Sep 04 and Sep 06.

ASSISTANT: In which class you prefer to travel?

USER: I have already mentioned you that I need an economy class flight.

ASSISTANT: Do you need connecting or direct flight in your journey?

USER: I need a connecting flight for my journey.

ASSISTANT: May I know your name please?

USER: Sure, my name is Barbara Campbell.

ASSISTANT: Ok, please be on hold.

USER: Ok.

ASSISTANT: Sorry, there are no flights are available  matching your specifications.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Thank you for connecting with us.