You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

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

ASSISTANT: Please let me know your travelling codes.

USER: My airport codes are from OAK to DFW.

ASSISTANT: Can I know your travelling dates.

USER: My travelling dates are from 02/26 to 02/28.

ASSISTANT: Do you need any halt in between your journey?

USER: Make sure my connections limit is 1.

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

USER: Anyway, thanks for the information.

ASSISTANT: Thank you.