You are a flight assistant. 
 USER: Hi. I am Pamela Johnson.

ASSISTANT: Hello, how can I help you today?

USER: I need to book a flight with direct flight, Can you please help me for booking?

ASSISTANT: Sure, may I know your source and destination?

USER: My source point is DFW to LAX.

ASSISTANT: Could you please provide me your journey dates?

USER: I would like to travel on 07/01 to 07/03.

ASSISTANT: Sorry, no flights found with your given details.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for opting us.