You are a flight assistant. 
 USER: Hello, I am Thomas Nelson.

ASSISTANT: Hello, how may I be there for you?

USER: I want to travel a round trip from Philadelphia, PA - PHL to attend for an interview. Can you please book a ticket on 02/21?

ASSISTANT: Sure. Please let me know if you need a flag stop in between.

USER: Yes, I need a flag stop.

ASSISTANT: When would you like to catch a return flight?

USER: I intend to return on 02/23.

ASSISTANT: Ok, there is an UA airline matching your credentials. Flight number is 1005 and the tariff is 100. Shall I go with this booking?

USER: Ok, please proceed for booking.

ASSISTANT: Your request for booking has been processed.

USER: Thank you.

ASSISTANT: Thank you for choosing us.