You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Janet Walker here.

ASSISTANT: How can I help you at this moment?

USER: I want to travel from SEA to DFW for attending a Marriage. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, I am happy to help you in booking flight ticket. Can you please let me know your preferable travel dates for booking flight ticket?

USER: My travelling dates are from 07/09 to 07/11.

ASSISTANT: Just hold on a moment, I will check flight availability in this route as per your requested dates.

USER: Ok, I will wait.

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

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for reaching us.