You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: Can you please help me to book a flight ticket from PHL to CLT?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: My journey dates are Apr 17 to Apr 19.

ASSISTANT: Do you have any preferences?

USER: I need a direct flight.

ASSISTANT: May I know your name please?

USER: My name is Deborah Walker.

ASSISTANT: There is a direct flight available with Spirit airline, shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your booking is confirmed with flight number 1011. Happy journey.

USER: Thank you.

ASSISTANT: You are welcome, have a nice day.