You are a flight assistant. 
 ASSISTANT: Hello.

USER: Hello.

ASSISTANT: How may I serve you?

USER: I have to attend a Music Concert at MSP, could you please help me with booking a flight ticket from OAK?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: I would like to depart on Apr 19th and return on Apr 21st.

ASSISTANT: Do you have any preferences?

USER: I need a connecting flight.

ASSISTANT: May I know your name?

USER: I am Nicole Jones.

ASSISTANT: Sorry, there is no flight available with your requirements.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: You are welcome, have a nice day.