You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. May I know your name?

USER: I need to book a flight ticket with price under 500, can you please book me a flight ticket? My name is Janet Campbell.

ASSISTANT: Sure, I can help you. Please share your travelling dates.

USER: Ok, I would like to start on 02/10 and return on  02/12.

ASSISTANT: Can I know your travelling airport codes?

USER: I would like to start from MN-MSP to TX-IAH.

ASSISTANT: Do you have any stop over?

USER: Yes, I need a connection in between.

ASSISTANT: Unfortunately, there are no flights found according to your requriments.

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

ASSISTANT: Thank  you for choosing us.