You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Can you please help me in guiding in booking my flight ticket from IAH to LAX?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: My trip dates will be May 10th to May 12th.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I prefer a direct flight.

ASSISTANT: May I know your good name please?

USER: I am Dennis Lopez.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: Its ok, thank you.

ASSISTANT: Thank you for reaching us.