You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you now?

USER: Going for Drives at Chicago, ORD as it is a beautiful place. I would like to book a ticket on 12/03.

ASSISTANT: Ok, I will help you in booking.

USER: Thank you.

ASSISTANT: From where would you like to board?

USER: I have to board from PHL.

ASSISTANT: When will you return from Chicago?

USER: 12/05 is the return date.

ASSISTANT: Kindly, mention your price limit.

USER: Price limit is 500.

ASSISTANT: Thank you for sharing the details, wait a minute.

USER: Sure.

ASSISTANT: Thank you for being patience. There is a connecting flight of Spirit airline available with fare 200 and 1019 number.

USER: Reserve a ticket with the name of Sarah Miller.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your assistance.

ASSISTANT: Thank you for availing us.