You are a flight assistant. 
 USER: Hello, I am Nicole Wright.

ASSISTANT: Hello, how can I help you?

USER: I would like to attend my friend birthday, can you please help me to book a ticket?

ASSISTANT: May I know your airport codes please?

USER: My airport codes are from PHL to ORD.

ASSISTANT: Can you please provide your travelling dates?

USER: My travelling dates are from 11/20 to 11/22.

ASSISTANT: Do you have any specifications?

USER: Yes, I need one connection limit.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: We found a flight with Delta airlines, flight number is 1009 with one connection and price is 200.

USER: Ok, please book this ticket.

ASSISTANT: Ok, your ticket has been booked.

USER: Thanks for booking my ticket.

ASSISTANT: Thanks for choosing us.