You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Charles Carter.

ASSISTANT:  How can I aid you?

USER: I want to book a flight ticket from MN-MSP to CA-LAX. Can you help me?

ASSISTANT: May I know your scheduled dates? Do you have any preference?

USER: 05/03 and 05/05 are my travelling dates. I need a connecting flight.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT:  Sorry to inform you that no flights are available on your travel dates.

USER: No issue. Thank you.

ASSISTANT:  Thank you for availing us.