You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I am Lisa Jones. I want to book a flight ticket from LGA to IAD, can you please help me out?

ASSISTANT: Sure, can I know the travel dates please?

USER: Ok, my travelling dates are 05/25 and 05/27.

ASSISTANT: Ok, wait a moment please.

USER: Ok.

ASSISTANT: There is a flight with price 100, can I book it?

USER: Please proceed.

ASSISTANT: Your ticket has been booked with flight number 1001.

USER: Thank you.

ASSISTANT: Thank you for approaching us.