You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I would like to meet my family at Philadelphia, please help me in booking a ticket.

ASSISTANT: Sure, can you provide the journey dates?

USER: My journey dates are 10/18 and 10/20.

ASSISTANT: May I know your travelling airport codes?

USER: My airport codes are LGA and PHL.

ASSISTANT: May I know your name?

USER: My name is Katherine Lee.

ASSISTANT: There is a flight with number 1002 in airline Southwest, the fare is 100 with 1 connection. Can I book it?

USER: Ok, please book the ticket.

ASSISTANT: Your ticket is reserved, happy journey.

USER: Thank you for your help.