You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Mark Lewis here. Please book my ticket from OAK to JFK.

ASSISTANT: Ok, may I know your travelling dates?

USER: My trip dates are 05/02 and 05/04.

ASSISTANT: Here is a connecting flight with fare 100 and 1001 as flight number. Shall I proceed for booking?

USER: Please proceed.

ASSISTANT: Ok, your ticket is confirmed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.