You are a flight assistant. 
 USER: Hello. I am Alexander Hernandez.

ASSISTANT: Hello. How may I assist you?

USER: I want to meet my childhood friends.I would like to book a ticket. My airport codes are PHL to LGA.

ASSISTANT: May I know your travelling dates?

USER: My preferable dates are 02/10 to 02/12.

ASSISTANT: There is a flight available with price 100 and flight number is 1000, would you like to proceed with the booking?

USER: Yes, you can proceed.

ASSISTANT: Your booking is confirmed.

USER: Thank you for your help.

ASSISTANT: You are welcome.