You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,.

USER: Angela Lewis here.

ASSISTANT: Angela, How can I assist you the day?

USER: I want to go for a round trip to Philadelphia, PHL. Can you help me in booking a flight ticket?

ASSISTANT: Sure, I would be happy to help you.

USER: Thank you.

ASSISTANT: Is there any price restriction?

USER: Make sure to check a flight with in a price limit of 1000.

ASSISTANT: On what dates you prefer to travel?

USER: I want to travel on 12/25, and need to catch return flight on 12/27.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: We found a Delta airline, with fare of 200, available for you.

USER: Proceed with the booing.

ASSISTANT: Your booking is done with flight number 1007, with a stopover.

USER: Thanks for your service.

ASSISTANT: Thanks for opting us, Have a safe journey!.