You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what kind of service are you looking from us?

USER: I want to book a ticket from IAH to MSP, can you help me?

ASSISTANT: Sure, can I know your travel dates?

USER: My travel dates are Sept 28 and 30.

ASSISTANT: Is there any connection limit?

USER: I prefer a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your name?

USER: I am Anna Phillips.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your preferable travel dates.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for choosing us.