You are a flight assistant. 
 USER: Hello, Jerry Jones here.

ASSISTANT: Hello, how may I help you?

USER: I am planning to visit Chicago, can you please book me a ticket fare under 500?

ASSISTANT: Ok Jerry, please provide me your journey dates.

USER: My preferable journey dates are from 08/08 to 08/10.

ASSISTANT: Can you help me with your airport codes please?

USER: My nearest airport codes of travelling are from SFO to ORD.

ASSISTANT: Please wait for a minute.

USER: Sure, take your own time. Please make sure that flight has 1 connection limit.

ASSISTANT: Jerry, there are no flights available with your preferences.

USER: Ok, not an issue. I will find any alternate for this trip. Thank you for providing information.

ASSISTANT: Thank you for contacting us, have a good day.