You are a flight assistant. 
 USER: Hi. I am Anthony Anderson.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I want to book a flight ticket from NY-LGA to CA-SFO. Can you help me?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: Dec 9th and 11th are my travelling dates.

ASSISTANT: Do you have any preferences? There is a direct flight available with AA airline, shall I Proceed?

USER: I need a connecting flight. You can reserve it.

ASSISTANT: Your booking is done with flight number 1023. Happy journey.

USER: Thank you for your help.

ASSISTANT: You are welcome, have a nice day.