You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Could you help me in booking a flight ticket from DTW to IAH?

ASSISTANT: Sure, can you share me your trip dates?

USER: I want to fly on July 30, return on Aug 01.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight.

ASSISTANT: Can I know your good name?

USER: My name is Helen Allen.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.