You are a flight assistant. 
 USER: Hello, I am Virginia Brown.

ASSISTANT: Hello, How can I aid you today?

USER: I am planning to attend sports event held at Houston, TX-IAH on 06/25. can you help me in booking the flight ticket?

ASSISTANT: Sure, please share your Origin place and date of return journey. Please provide additional details like price limit and connection limit also.

USER: My origin is Minneapolis and St. Paul, MN-MSP on 06/23 with price limit  1000 and  single connection.

ASSISTANT: Ok, just a minute, will revert you.

USER: Ok.

ASSISTANT: Thanks for your patience, but no flights found as date given by you.

USER: Thanks for the information.

ASSISTANT: Thanks for choosing us.