You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am planning for vacation from PA-PHL to CA-OAK.Can you please help me for booking the flight ticket?

ASSISTANT: May I know your name please?

USER: Sure, my name is Anthony Jackson.

ASSISTANT: Jackson, how long is your trip?

USER: The trip is 2 days, from 26/12 to 28/12.

ASSISTANT: As per your request there is a flight avialable, shall I proceed booking?

USER: May I know the price?

ASSISTANT: Price is 100.

USER: Ok, please book the ticket.

ASSISTANT: Ok, your ticket is booked. Your flight number is 1000.

USER: Thank you for your help.

ASSISTANT: Thanks for contacting us.

USER: You are welcome.