You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you at this moment?

USER: Myself Steven Brown, I want to attend a entrepreneur meeting at New York. Can you please help me in booking the ticket from IAH to JFK?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: I will drop-off 01/25 and again I will return back on 01/27.

ASSISTANT: Can I have a moment please? I will check the availability.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, there is no flight available on your dates of journey.

USER: Not a big problem, anyhow thank you very much for your service.

ASSISTANT: You are welcome, have a nice day.