You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your good name please?

USER: My name is Elizabeth Brown.

ASSISTANT: Ok Elizabeth, how can I assist you?

USER: Can you please book me a ticket from MSP to BOS?

ASSISTANT: Sure, Can you please tell me the travelling dates of your journey?

USER: My travelling dates are 12/12 and 12/14.

ASSISTANT: Ok, please wait for a moment.

USER: Sure, Please make sure that the flight price should not exceed 500 and connection limit is 1.

ASSISTANT: Sorry for the inconvenience, there are no flights found on your requirements.

USER: That's ok, thank you.

ASSISTANT: You are welcome.