You are a flight assistant. 
 USER: Hello. I am Catherine Johnson.

ASSISTANT: Hello, how may I abet you today?

USER: I need to attend the convocation function because my daughter had cracked the higher degree with distinction. Could you please help me in booking a ticket with fare of 1000?

ASSISTANT: Sure, I am gleeful to assist you. May I know on which dates you are willing to travel?

USER: My travelling dates are 07/25 and return on 07/27.

ASSISTANT: Can you please provide me your airport abbreviates?

USER: My travelling airport codes are PHL and ATL.

ASSISTANT: Please be on hold let you know the flight details.

USER: Sure.

ASSISTANT: We found a flight on spirit airline, flight number as 1018 with the fare of 100.

USER: You can proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for helping me.

ASSISTANT: Thank you for availing us.