You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you for the day?

USER: Help me in booking a flight from IAH to EWR?

ASSISTANT: Sure, I will help you with that. May I know your planned travel dates?

USER: I like to travel on Sept 09 to 11.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Can I know your connection limit?

USER: I prefer connection flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: May I know your name please?

USER: I am Brenda Smith.

ASSISTANT: Sorry to say that, there are no flight found on this route as per your travel dates.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us, have a great day.