You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Joseph Green.

ASSISTANT: How can I aid you?

USER: I want to travel from SFO to LGA. Can you book a flight ticket for me?

ASSISTANT: Sure, I'll help you in that. May I know your preferable journey dates please?

USER: I want to travel on 12/06 and 12/08.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Delta airlines is having a flight on that route with ticket fare of 100, shall I proceed for booking?

USER: Yes, book the ticket for me.

ASSISTANT: Your ticket has been booked with flight-1000, have a safe journey.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.