You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you with?

USER: I want to visit Park Cities in Dallas.Can you please help me out?

ASSISTANT: Yes, I will help you with that. There are some other places to visit in Dallas, you can also go there.

USER: The airport codes are from TX-DFW to MA-BOS and travel dates are from 11/12 to 11/14.

ASSISTANT: Thank you, may I know your name?

USER: Sure, my name is Steven Williams.

ASSISTANT: Sorry, there is no flight available for your details.

USER: Ok, It's no problem. Thank you for your information.

ASSISTANT: Thank you for choosing us, hope you will contact us in future.