You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I help you?

USER: I am heading to Los Angeles, CA - LAX to enjoy the private helicopter tour over the long beach with my partner.

ASSISTANT: Ok.

USER: Please book me a ticket from Las Vegas, NV - LAS.

ASSISTANT: Sure. May I know your travelling dates?

USER: I want to travel on 12/19 and return on 12/21.

ASSISTANT: May I know your name?

USER: My name is Anthony Jones.

ASSISTANT: Thanks for your details.

USER: Ok.

ASSISTANT: There is no flights found on your data.

USER: No problem, thank you for your information.

ASSISTANT: Thank you.