You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jerry Young.

ASSISTANT: How can I assist you?

USER: I want to book a flight ticket from DC - DCA to NC - CLT, so please help me in booking a flight ticket.

ASSISTANT: Could you provide me your travelling dates?

USER: I would like to fly on 01/31 and return on 02/02.

ASSISTANT: Do you have any preference?

USER: Yes, I need a halt.

ASSISTANT: Sorry, no flights are available on your travel dates.

USER: Not an issue. Thank you.

ASSISTANT:  Thank you for availing us.