You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: William Lewis here. Can you please help me in booking a flight ticket from LGA to PHX?

ASSISTANT: I am here to help you, please provide your trip dates to get a flight for you.

USER: Sure, my planned travel dates are from June 14 to June 16.

ASSISTANT: May I know your class preferences?

USER: No, I don't have any specific class preference.

ASSISTANT: There is a connecting flight-1003 in economy class. Shall I confirm it?

USER: Ok, please confirm that flight.

ASSISTANT: Ok, booking is done on Southwest airlines.

USER: Thank you for your service.

ASSISTANT: Thanks for approaching us.