You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I oblige you today?

USER: I would like to book a ticket from Philadelphia to consult my family doctor at Chicago on 08/22 and will return on 08/24. Please help me with booking.

ASSISTANT: Sure, I am rapturous to help you. Can you please share your source and destination airport codes?

USER: Sure, I want to fly from PA-PHL to IL-ORD.

ASSISTANT: May I know your name?

USER: Sure, I am Larry Clark.

ASSISTANT: Do you need a halt?

USER: Yes, I need a flag stop in between my journey.

ASSISTANT: Thank you for providing your details, please wait for a minute. Sorry, we found a direct flight from your source to travel.

USER: Ok, do not proceed further. Thank you.

ASSISTANT: Thank you for contacting us.