You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Jason Lopez here.

ASSISTANT: How can I help you?

USER: I want to attend a Marriage in Oakland. Can you please help me for booking the flight ticket?

ASSISTANT: Let me know your travelling dates.

USER: My travelling dates are 01/04 and 01/06.

ASSISTANT: Can I know your airport codes?

USER: My airport codes are PHX and OAK. I want to prefer direct flight.

ASSISTANT: Sorry, no flights found for your travelling dates.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you.