You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Patrick Clark. I am planning to visit Disneyland at Los Angeles, could you please help me with booking a flight ticket?

ASSISTANT: Patrick Clark, may I know your travelling date for this trip please?

USER: I would like to take off on 11/26 and return on 11/28.

ASSISTANT: What are your airport codes?

USER: My source airport code is DCA and destination airport code is LAX.

ASSISTANT: Sorry, no flights are available for you.

USER: That's ok, I will find an another alternate way to complete my trip.

ASSISTANT: Thank you for connecting with us, have a great day ahead.

USER: Anyways, thank you for the information.