You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: Catherine Harris here. I have a plan to visit Philadelphia. Can you help me in booking flight ticket?

ASSISTANT: Sure, I am here to help you out with that. May I know your airport codes please?

USER: My airport codes are TX - DFW and PA - PHL.

ASSISTANT: Ok, please share your travelling dates to proceed further?

USER: I will fly on 09/15 and return 09/17.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Spirit airlines is having a connecting flight with a fare of 100, shall I proceed with booking?

USER: Please proceed for booking.

ASSISTANT: Your ticket is confirmed with the flight-1011.

USER: Thank you for your service.

ASSISTANT: Welcome, have a safe journey.