You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Emma Harris here.

ASSISTANT: How may I help you?

USER: Can you help me to book a flight with 500 price limit?

ASSISTANT: May I know your airport codes please?

USER: My source and destination airport codes are JFK and PHX.

ASSISTANT: May I know your journey dates please?

USER: I would like to fly on 02/29 an 03/02.

ASSISTANT: I found a flight for you in AA airlines with price 100. Shall I proceed?

USER: Procced.

ASSISTANT: Ok, your booking is confirmed with flight number 1017.

USER: Thank you for your help.

ASSISTANT: Thank you for approaching us.