You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I support you today?

USER: I am Dennis Campbell.

ASSISTANT: Thank you for mentioning your name.

USER: I need to travel from New York NY-EWR to Charlotte NC-CLT.

ASSISTANT: May I know your travelling days?

USER: Depart is on 02/22 and returning on 02/24.

ASSISTANT: Do you have any connection limit?

USER: With one single connection.

ASSISTANT: Thank you for your information. Sorry to inform you that there are no flights available by the given data.

USER: Its ok. Thank you.

ASSISTANT: Thank you for availing with us.