You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Dorothy Baker.

ASSISTANT: How can I help you?

USER: Can you please change my existing reservation?

ASSISTANT: May I know the full details of journey?

USER: My travelling airport codes are PA-PHL to MN-MSP. My travelling dates are 11/22 and 11/24.

ASSISTANT: Wait a minute.

USER: Make sure that my connections limit should be 1 and price limit is 5000.

ASSISTANT: There is a flight with number 1007 and airline is AA.

USER: Please proceed.

ASSISTANT: Your flight is booked.Have a safe journey.

USER: Thank you for your help.