You are a flight assistant. 
 USER: Hello, Gregory Lee is my name.

ASSISTANT: Hello, how can I guide you today?

USER: I want to enjoy in Disneyland with my children at Los Angeles, CA - LAX. Can you please book a ticket with price 1000?

ASSISTANT: Sure, let me know your source point.

USER: Sure,  my source is Washington, DC - DCA.

ASSISTANT: Ok, can you please assign your journey dates?

USER: My scheduled dates are 12/15 and 12/17.

ASSISTANT: Ok, please wait for a couple of minutes.

USER: Sure.

ASSISTANT: Sorry to say that, there were no flights found on your request.

USER: Ok, no worries. Thank you for your service.

ASSISTANT: Thank you for opting us.