You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Myself Jessica Mitchell. I need to meet my sister in EWR, can you book a ticket from PHL?

ASSISTANT: Ok, may I know your preferable dates of travelling?

USER: My travel dates are from 09/21 to 09/23.

ASSISTANT: I have found a flight based on your details.

USER: Please book the ticket.

ASSISTANT: Flight number 1003 from Spirit airline is available for you. I have booked your ticket with that.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us, have a great journey.