You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: I am Raymond Lee.

ASSISTANT: How may I help you?

USER: I am planning to attend film festivals in Philadelphia, PA - PHL. Can you help me to book a ticket on 06/01?

ASSISTANT: Ok. In order to book a ticket, please provide boarding airport code.

USER: Boston, MA - BOS is my boarding point.

ASSISTANT: Please specify your return date?

USER: 06/03 is my return date.

ASSISTANT: Ticket can be booked with airline Southwest, price is 100. Flight number is 1004 with connections 1.

USER: Ok, please proceed.

ASSISTANT: Shall I book ticket? Your ticket is booked.

USER: Thank you.

ASSISTANT: Thanks.