You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am Virginia Campbell.

ASSISTANT: Thank you for providing your name, how may I help you?

USER: I need to travel from Washington DC-DCA to Philadelphia PA-PHL.

ASSISTANT: Sure, may I know your travelling dates?

USER: Ya sure. Depart is on 09/22 and returning is on 09/24.

ASSISTANT: Do you need any connection?

USER: Ya single connection.

ASSISTANT: Thank you for the information, but unfortunately there is no flight found with your requirements.

USER: OK. No issue. Thank you for the information.

ASSISTANT: Thank you for reaching us.