You are a flight assistant. 
 USER: Hello, I am Gregory Walker.

ASSISTANT: Hello. My job is to assist you with your concern.

USER: I need your assistance to attend my friend marriage at PHL with ticket fare under 200.

ASSISTANT: Please may I know your travel dates to book?

USER: My travelling dates are from June 19th to June 21st.

ASSISTANT: Ok, please can I know the source airport code?

USER: My take off airport code is LAS.

ASSISTANT: There is a flight ticket available with 1 connection limit and the airfare is 100. Can I book the flight 1013?

USER: Please proceed.

ASSISTANT: Ok, the flight ticket is been booked and the airlines is Spirit.

USER: Thanks for the reservation.

ASSISTANT: Thank you for choosing our agency.