You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Can you please help me with flight ticket booking DTW to IAH to attend a seminar?

ASSISTANT: Yes, can you share me your travelling dates?

USER: I would like to move on May 10 and I will catch the return flight on May 12.

ASSISTANT: Do you have any other specifications?

USER: I would like to travel in economy class flight with a single limit connection.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that there are no flights found on your requested dates.

USER: I can prefer any source to travel, thank you for your information.