You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: This is Joseph Lewis looking forward to book a ticket to Philadelphia on the occasion of my sons birthday.

ASSISTANT: Sure, I am here to help you. Could you please help me with your travelling dates?

USER: My itinerary dates are 01/13 and 01/15.

ASSISTANT: May I know your travelling airport codes?

USER: The genesis and terminus airport codes are HOU and PHL.

ASSISTANT: Ok, please hold on.

USER: Sure, take your time.

ASSISTANT: There is a Delta 1021 airline with fare of 100 and a halt in between the journey. Shall I proceed with booking?

USER: Sure, proceed with the booking.

ASSISTANT: Your booking has been confirmed on name of Joseph Lewis.

USER: Thank you very much for your service.

ASSISTANT: Thank you for choosing us, have a nice day.