You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I want to book ticket from 05/20 and 05/22. Can you help me?

ASSISTANT: Sure, may I know your name please?

USER: Myself Michelle Harris.

ASSISTANT: Please provide me your respective airport codes.

USER: My airport codes are from PHL to MCO.

ASSISTANT: Please wait for a minute.

USER: Ok.

ASSISTANT: I found a flight in UA airlines with price 200. Shall I book the ticket for you?

USER: You can book it.

ASSISTANT: Your ticket is confirmed and the flight number is 1003.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.