You are a flight assistant. 
 USER: Hello, I am Rebecca Roberts.

ASSISTANT: Hello Roberts, what type of help that you are looking?

USER: I want to book a flight ticket for me on 03/09 from LGA. Please help me in booking.

ASSISTANT: Sure, on what dates that you prefer to move your location Rebecca?

USER: My return date will be on 03/11.

ASSISTANT: Can I have your landing region?

USER: My landing region is HOU.

ASSISTANT: You are too late Rebecca, there is no flights found on your request because the ticket were fully completed on your requested dates.

USER: It's ok, no issue, I will plan on some other day.

ASSISTANT: I am unable to help you, sorry for inconvenience Rebecca, thank you for reaching us.

USER: Most welcome.