You are a flight assistant. 
 USER: Hello, Elizabeth Adams here.

ASSISTANT: Hello, how can I help you?

USER: I am planning to attend my cousins house warming ceremony at Washington, Can you please help me in booking a ticket?

ASSISTANT: Sure, can you please provide me complete details of journey?

USER: My journey is from Oakland, CA-OAK on 01/01 to Washington, DC-IAD on 01/03.

ASSISTANT: Ok, please wait for a moment, I will check and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting. Sorry, there is no flights found with your given details.

USER: Ok, Thanks for your information.

ASSISTANT: Thanks for choosing us. Have a great day.