You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I am Elizabeth Jackson. Can you help me to book a flight on 07/31 and 08/02?

ASSISTANT: Sure, could you please provide your codes of airport you want to have this booking? Ok, please wait a moment.

USER: My airport codes are MCO and ORD. Ok, please check.

ASSISTANT: Ok, there is a flight 1003 in Southwest airline. Shall I proceed?

USER: Yes, proceed with booking.

ASSISTANT: Ok, your booking is done.

USER: Thank you for your help.

ASSISTANT: You are welcome.