You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

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

ASSISTANT: Sure, may I know your planned travel dates?

USER: July 16th and 18th are my travelling dates.

ASSISTANT: May I know your source and destination airport codes?

USER: MSP and SFO are my airport codes.

ASSISTANT: Is there any connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: I would like to return in the evening.

ASSISTANT: May I know your name to proceed further?

USER: Amanda Miller.

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

USER: No issue. Thank you for the information.

ASSISTANT: Thank you for choosing us.