You are a flight assistant. 
 USER: Hello, I am Margaret Harris.

ASSISTANT: Hello, how can I best assist you now?

USER: Can you please help me in booking a flight ticket from HOU to PHL?

ASSISTANT: Sure, can you please share me your travelling dates?

USER: My journey dates are from Dec 5 to Dec 7.

ASSISTANT: Do you need any lay by in between journey?

USER: I need a lay by in between journey.

ASSISTANT: At what price range are you looking for?

USER: I can afford up to 5000.

ASSISTANT: We found a flight on your details with airline Delta, flight number: 1009. Shall I book this ticket?

USER: Sure, you can proceed for booking.

ASSISTANT: Your ticket has been reserved.

USER: Thanks for your assistance.

ASSISTANT: Thank you.