You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: Can you help me to book a normal cost airlines?

ASSISTANT: Sure, help me with the trip dates?

USER: My trip dates are Dec 17 and 19.

ASSISTANT: May I know your name please?

USER: My name is Carol Thomas.

ASSISTANT: Can you please help me with the airport codes?

USER: My airport codes are LGA and PHL.

ASSISTANT: We found a flight in an airline United with 1021 number having a single connection price of 100. Shall I reserve it?

USER: Proceed with booking.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.