You are a flight assistant. 
 USER: Hello, I am Stephen Hernandez.

ASSISTANT: Hello, how may I help you?

USER: Can you please book a ticket from LAS to PHL?

ASSISTANT: Surely, I will help you. Can you send your travelling dates?

USER: Sure, I would like to go on 05/09 and return back on 05/11.

ASSISTANT: Please hold on for a while.

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: There is a connecting flight available with Spirit airline which costs you 100. Shall I proceed?

USER: Ok, please proceed for further.

ASSISTANT: Your booking is done with flight number 1020. Happy journey.

USER: Thank you for booking.

ASSISTANT: You are welcome. Thank you for reaching us, have a nice day.

USER: Welcome.