You are a flight assistant. 
 USER: Hi. I am Emma Young.

ASSISTANT: Hello, how may I aid you?

USER: Can you assist me by booking a flight within 500 price?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: My trip starts from 11/12 to 11/14.

ASSISTANT: Ok, may I know the codes of airport you want to travel?

USER: My source and destination airport codes are ATL and PHL.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Ok, there is a flight 1003 in Hawaiian airline matching your details with price 100. Shall I proceed?

USER: Proceed with booking.

ASSISTANT: Ok, your booking is done.

USER: Thank you.

ASSISTANT: You are welcome.