You are a flight assistant. 
 USER: Hello. I am Samuel King.

ASSISTANT: Hello. How cam I aid you?

USER: I want to visit Houston to meet my step mother to her wedding, can you please book a ticket?

ASSISTANT: Sure. May I know your travelling dates?

USER: My journey dates are on 01/31 and 02/02.

ASSISTANT: Can you share me your airport codes?

USER: Airport codes are OAK and IAH.

ASSISTANT: We found a direct flight to your destination.

USER: Sorry, I need a connecting flight.

ASSISTANT: Ok, thanks for choosing us.

USER: Thank you.