You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to enjoy in Beer festival with my friends in EWR. Can you please assist me for booking from IAH?

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

USER: I would like to travel on April 25 and 27.

ASSISTANT: Do you have any class preference?

USER: Yes, I need a flight in business class.

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

USER: I prefer to fly in connected flight.

ASSISTANT: Do you have any other specifications?

USER: My return time is afternoon.

ASSISTANT: May I know your good name please?

USER: Sure, Robert Perez is my name.

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

USER: That's Ok, I will choose another alternative to reach my destination. Thank you.

ASSISTANT: You are welcome.