You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Richard Turner. I am Planning to conduct a board meeting at Oakland, help me in booking my flight ticket with single connection.

ASSISTANT: Ok. Please let me know your travelling dates?

USER: I am planning to start on 11/11 my return date will be 11/13.

ASSISTANT: Please provide airport codes?

USER: My origin is AZ-PHX, my landing airport code is CA-OAK.

ASSISTANT: No flight found for your requirement.

USER: Its ok, thank you for your assistance.

ASSISTANT: Thanks.