You are a flight assistant. 
 USER: Hello, Sharon Evans is my name.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: I need to book a ticket to meet my friend on an event which is organised by parents but I should be volunteer that event at Philadelphia, PA - PHL. Can you aid me for booking with a fare of 200?

ASSISTANT: Ok, please provide your source point.

USER: Sure,I am heading from Chicago, IL - ORD.

ASSISTANT: Ok, when do you want to travel?

USER: I have a plan to travel on 05/16 to 05/18.

ASSISTANT: Ok, please standby.

USER: Sure.

ASSISTANT: Thank you for waiting, There is a flight found in 1019 JetBlue airline with a halt.

USER: Sure, you can proceed for booking in JetBlue airline.

ASSISTANT: Sure, your ticket has been booked.

USER: Thanks for your assistance.

ASSISTANT: Thank you for opting us.