You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am planning to visit Boston.Can you please help me for booking the flight ticket from MA-BOS to CA-SFO?

ASSISTANT: May I know your travelling dates?

USER: The travelling dates 10/20 to 10/22.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: As per your requirement I found a ticket for you.The price is 100 and flight number is 1001.

USER: Ok, please book the ticket.

ASSISTANT: Sure, I confirm your ticket successfully. What is your name?

USER: My name is Robert Green. Thank you for your help.

ASSISTANT: Thank you for your help.

USER: Welcome.