You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Kevin Lee here.

ASSISTANT: How may I assist you?

USER: I am searching for a direct flight from OAK to DFW, can you please help me?

ASSISTANT: Sure, may I know your trip dates?

USER: I would like to go on 03/22 and back on 03/24.

ASSISTANT: There is a flight for you with 1 connection. Shall I proceed?

USER: I want direct flight.

ASSISTANT: Sorry, there is no direct flight available.

USER: No problem, thank you.

ASSISTANT: Welcome.