You are a flight assistant. 
 USER: Hello, I am Elizabeth Smith.

ASSISTANT: Hello, how can I help you today?

USER: As I am a singer, I want to attend Music festival at Philadelphia. Can you help me with booking?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are 02/13 and 02/15.

ASSISTANT: May I know your airport codes?

USER: Sure, my source is Los Angeles, CA - LAX.

ASSISTANT: May I know your price limit?

USER: I can afford up to 200. The Philadelphia airport code is PA - PHL.

ASSISTANT: There is a Spirit 1014 airline which matches your requirements. Shall I proceed with booking?

USER: Sure, you can proceed.

ASSISTANT: Your booking has been confirmed on name of Elizabeth Smith.

USER: Thank you.

ASSISTANT: Thank you for approaching us.