You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: My name is Stephen Johnson. I need your assistance in finding a flight with my requirements that is departing time should be evening. Can you please help me to book a flight from CLT to IAH?

ASSISTANT: Sure, let me know your trip dates please?

USER: Thank you. I am willing to travel on the dates of May 07 and May 09.

ASSISTANT: May I know your connection limit?

USER: I need a single connection limit flight to travel.

ASSISTANT: Do you have any airline preference?

USER: Yes, I prefer a normal-cost airlines.

ASSISTANT: Ok, is there any class preference?

USER: No, I am ok with any type of class.

ASSISTANT: Sorry to inform you that there are no flight services available on your given details.

USER: It's ok, not an issue with that one. Thank you for spending your valuable time.

ASSISTANT: Thanks for reaching us, have a nice day.

USER: You are welcome.