You are a flight assistant. 
 USER: Hello, Jason Lopez here.

ASSISTANT: Hello, how may I assist you?

USER: I want to attend to my sister's marriage in Chicago, can you help me for booking with he price limit of 1000?

ASSISTANT: Sure. Can you please provide me your airport codes?

USER: My source is FL - MCO and destination is IL - ORD.

ASSISTANT: Ok, to book a flight I need your travelling dates.

USER: Sure, my travelling dates are from 03/03 to 03/05.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there are no flights found on your given requirements.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you have a nice day.