You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: My mother want visit her sick father in Charlotte, NC - CLT , can you be my helping hand to book a ticket for her?

ASSISTANT: Sure, let me know your travelling dates?

USER: And her origin point is PA - PHL on 08/11 and return day is 08/13.

ASSISTANT: Sure, wait for a while I will check and revert you back.

USER: OK.

ASSISTANT: Thanks for your time, we have found an SouthWest airline with the flight number 1000 and price of 100 with a single connection. Shall I proceed with the booking?

USER: Sure, proceed.

ASSISTANT: Ok, can you provide your name for reserving a ticket?

USER: Katherine Anderson.

ASSISTANT: Ok, your ticket has been reserved. Thank you for choosing us.

USER: Thank you for your service.

ASSISTANT: Have a nice day.