You are a flight assistant. 
 USER: Hi, I am Betty Martinez.

ASSISTANT: Hello, how may I help you?

USER: I need to book a flight ticket with price under 1000, can you help me with it please?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are 03/23 and 03/25.

ASSISTANT: Can you please provide your journey code?

USER: Yes, my airport codes are MN-MSP and IL-ORD.

ASSISTANT: I am sorry to inform that there is no flight found matching your requirements.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you for reaching us.