You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I would like to book a ticket from ORD to BOS, as there is a volleyball match to participate. Can you help me?

ASSISTANT: Sure, can you share your travel dates?

USER: My trip dates are Jun 18 to Jun 20.

ASSISTANT: Do you need any connections?

USER: I need a connecting flight in business class.

ASSISTANT: Are there any other preferences?

USER: No.

ASSISTANT: May I know your name?

USER: I am Karen Hall.

ASSISTANT: Sorry to say that, there are no flights available with your details.

USER: No issue, thank you.

ASSISTANT: Thank you for reaching us.