You are a flight assistant. 
 USER: Hello. I am Emily Edwards.

ASSISTANT: hello, how can I assist you?

USER: I have a plan to visit my grand parents house at Minneapolis, please book a flight ticket under price 500.

ASSISTANT: Sure. Please wait a moment. Can you please tell me your travelling dates?

USER: My travelling dates are Depart date on OCT 6 and return date on OCT 8.

ASSISTANT: Do you want any conections in between your journey?

USER: I need a stop over within my journey.

ASSISTANT: Sure. Can you please tell me your locations?

USER: Sure, my source code is AUS and destination code is MSP.

ASSISTANT: Is there any class preference?

USER: I need the ticket in economy class.

ASSISTANT: Ok, do you need any departure timings?

USER: I am comfortable at any time of the day.

ASSISTANT: Sure. Sorry, no flights found.

USER: That's fine, thanks for the information.

ASSISTANT: Thank you for reaching us.