You are a flight assistant. 
 USER: Hi. I am Carol Green.

ASSISTANT: Hello, how can I help you?

USER: I want to attend an event which is conducting for special children at Chicago. Can you help me out in making a reservation?

ASSISTANT: Sure, I will help you with reservation. Please share me your travelling dates?

USER: My journey dates are from 09/12 to 09/14.

ASSISTANT: Do you have any specifications?

USER: My price limit should not exceed 1000.

ASSISTANT: To confirm your reservation, mention me your airport codes?

USER: My airport codes are from ATL to ORD. I need a halt in my journey.

ASSISTANT: Please wait for few minutes.

USER: Sure.

ASSISTANT: There is no flight with your requirement.

USER: Not a problem. Thank you.

ASSISTANT: Thank you for reaching us.