You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Mark Nelson here.

ASSISTANT: How can I assist you today?

USER: I would like to attend a marriage at ATL, so can you help me to book a flight from PHL?

ASSISTANT: Sure, can you please share your travel dates?

USER: My travelling dates are 01/17 and 01/19.

ASSISTANT: Let me check for the availability of flight.

USER: Ok.

ASSISTANT: Mark, there is a flight available with price 100 and the connection is 1 with UA airline. Would you like me to proceed with the booking?

USER: Proceed with booking.

ASSISTANT: Your booking is confirmed with 1016 flight number.

USER: Thank you.

ASSISTANT: Thank you for reaching us.