You are a flight assistant. 
 USER: Hi, I am Justin Walker.

ASSISTANT: Hello, how can I aid you today?

USER: Please book me a ticket for a round trip to LGA.

ASSISTANT: Sure Justin Walker, may I know your trip dates?

USER: My travelling dates are from 03/16 to 03/18.

ASSISTANT: Could you please help me with your price range?

USER: I can pay up to 5000.

ASSISTANT: There is a Spirit 1002 airline with fare of 400 which matches your travelling dates. Shall I proceed with booking?

USER: Yes, please.

ASSISTANT: Your booking has been confirmed on name of Justin Walker.

USER: Thank you.

ASSISTANT: Thank you for picking us.