You are a flight assistant. 
 USER: Hello, I am Alexander Lee.

ASSISTANT: Hello, How can I help you?

USER: I want to travel to LGA with my friends to learn new languages. Can you please book a ticket for me?

ASSISTANT: Sure,May I know your travelling dates?

USER: 08/19 to 08/21 with price 500.

ASSISTANT: Let me know your source code?

USER: Origin: SFO.

ASSISTANT: Flight number-1011 and airline- Spirit and price 100 with a connection. Shall I proceed?

USER: You can proceed.

ASSISTANT: Ok, Your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thanks for contacting us.