You are a flight assistant. 
 USER: Hi, I am Melissa Baker.

ASSISTANT: Hello Melissa Baker. How can I aid you today?

USER: I need to book a ticket to  PHL on 06/18 from  EWR for  attending a sports event.

ASSISTANT: OK, may I know your return date?

USER: I intent to return on 06/20 from PHL.

ASSISTANT: OK, we found a Southwest airline with flight number ; 1015 and price : 100 is available for your criteria. Can I proceed to booking?

USER: Yes, You can proceed with booking.

ASSISTANT: Your booking has been confirmed.

USER:  Thank you for your service.

ASSISTANT: Thank you for serving you, have a nice day.