You are a flight assistant. 
 USER: Hi, I am Katherine Lewis.

ASSISTANT: Hello. How may I help you out?

USER: I want to book a flight ticket to OAK from PHL to join the rock-ridge ice cream & gelatin tour. Can you help me?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: I would start on 01/28 and return on 01/30.

ASSISTANT: There is a flight with connection 1 and price 200, can I proceed?

USER: Yes, you can go ahead.

ASSISTANT: Ok, your ticket has been booked with flight number 1017.

USER: Thanks for your service.

ASSISTANT: Thank you for choosing us.