You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: Can you please reserve me a flight ticket from HOU to LGA?

ASSISTANT: Sure, could you please share your trip dates?

USER: My trip dates are June 07 and June 09.

ASSISTANT: Ok, could I have your name please?

USER: I am Dennis Lopez.

ASSISTANT: Ok, do you need direct or connecting flight?

USER: I need a connecting flight.

ASSISTANT: Ok, do you have any other specifications?

USER: I prefer to return in the morning time.

ASSISTANT: Sorry, there is no flight with your requested time.

USER: Ok, no issues. Thank you for your response.

ASSISTANT: You are welcome, have a great day.