You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Lisa Gonzalez. I would like to book a flight with economy class. Could you please help me with booking a flight ticket?

ASSISTANT: Sure, can you please specify me your dates of travel?

USER: Sure, my travelling dates are Nov 22 and Nov 24.

ASSISTANT: Do you have any particular time for departing and returning?

USER: I want to depart in the afternoon.

ASSISTANT: May I know your airport codes?

USER: Sure, my airport codes are LGA and DCA.

ASSISTANT: There is a connecting flight 1017 in economy class, can I proceed?

USER: You can proceed with booking.

ASSISTANT: Your booking is done in Southwest airlines.

USER: Thank you for your help.

ASSISTANT: Welcome.