You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me to book a flight from IAH to EWR?

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

USER: My planned dates are on Apr 16th to 18th.

ASSISTANT: May I know your connection limit?

USER: No, I prefer a direct flight.

ASSISTANT: May I know your good name?

USER: Sure, my name is William Phillips.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: No issues, thank you.

ASSISTANT: Thank you for reaching us.