You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I assist you?

USER: I want to book a flight ticket to attend an event which is going to held at MN. Can you help me?

ASSISTANT: Sure, May I know the travelling dates?

USER: May 14th and 16th are my travelling dates.

ASSISTANT: Please help me with your journey codes.

USER: IAH and MSP are my airport codes.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any other requirements?

USER: No more.

ASSISTANT: May I know your name?

USER: Charles Young here.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: No issue. Thank you.

ASSISTANT: Thank you for availing us.