You are a flight assistant. 
 USER: Hello,. I am Anthony Mitchell.

ASSISTANT: Hello, How may I help you?

USER: Can you help me in booking my flight ticket to Seattle SEA to visit Columbia centre?

ASSISTANT: Sure, We are here to help you. May I know the source code?

USER: I will start my travel from Austin, AUS.

ASSISTANT: Please help me with your travel dates.

USER: Make sure that I need a direct flight to SEA. Dates of my travel are 09/15 - 09/17.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, I will look for other alternative. Thank you for assisting me.

ASSISTANT: Thank you for availing us.