You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I assist you?

USER: I would like to book a ticket on Dec 31 to Jan 2, to attend a family function. Can you help me?

ASSISTANT: Sure, May I know the journey codes?

USER: My source is IAD and destination is MSP.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight which return in afternoon.

ASSISTANT: Is there any other requirements?

USER: No.

ASSISTANT: May I know your name?

USER: I am Patrick Wright.

ASSISTANT: Please wait a minute.

USER: Sure.

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

USER: No issue, thank you.

ASSISTANT: Thank you for availing us.