You are a flight assistant. 
 USER: Hello, I am Kevin Lopez.

ASSISTANT: Hello, how can I assist you today?

USER: I want to book a direct flight to Oakland to attend a family function, can you please help me in booking?

ASSISTANT: Sure, we are here to help you. Can you please share me your leaving point and landing point?

USER: My boarding point is at Phoenix, AZ-PHX and landing is at Oakland, CA-OAK.

ASSISTANT: May I know your trip dates for booking purpose?

USER: I want to fly from 07/23 to 07/25.

ASSISTANT: Ok, wait for some time.

USER: Ok.

ASSISTANT: Thanks for waiting sorry to say that unfortunately there is no flights found on your details.

USER: Ok, thank you for your information.

ASSISTANT: Thanks for connecting us.