You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How may I assist you?

USER: My name is Barbara Carter. I want to book a flight ticket to Philadelphia, PA - PHL to meet my parents.

ASSISTANT: In order to book a flight ticket, please provide your boarding airport code?

USER: My source is New York, NY - LGA.

ASSISTANT: May I know your travel dates?

USER: My departure day is 04/21, return day is 04/23.

ASSISTANT: Found a connecting flight 1012 for price 200, airline is Hawaiian. Shall I book a flight ticket?

USER: Yes, please.

ASSISTANT: Your flight ticket is booked.

USER: Thank you for your service.

ASSISTANT: Thanks.