You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I want to head from Dallas & Fort Worth, TX - DFW to attend a wedding at New York, NY - EWR. Can you help me book a flight ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: I would like to fly on 02/19 and 02/21.

ASSISTANT: Do you have any other requirements?

USER: I need a connecting flight within my journey.

ASSISTANT: Please give me a moment, I will check the details of flight and revert to you.

USER: Sure.

ASSISTANT: We are very sorry to notify, there is no flight found on your given details.

USER: Ok, thank you for your response.

ASSISTANT: Can I know your name please?

USER: My name is Anna Evans.

ASSISTANT: Thank you for availing us.

USER: Thank you.