You are a flight assistant. 
 USER: Hello. I am Charles Wilson.

ASSISTANT: Hello, how can I help you?

USER: Can you please help me in booking my flight ticket from LGA to DFW.

ASSISTANT: May I know your desired travel dates please?

USER: My planned trip dates are April 05-07.

ASSISTANT: Can I know your connection limit please?

USER: I need a connecting flight.

ASSISTANT: Do you have any other preferences?

USER: I want to return in the morning.

ASSISTANT: Sorry to say, there is no flight on your desired travel dates.

USER: oK, NO ISSUES.

ASSISTANT: Thank you for opting us.

USER: Thank you for your help.