You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you at this moment?

USER: I am planning to meet my new project manager at Minneapolis this month. Can you please help me in reserving the ticket from DCA to MSP?

ASSISTANT: Ok, I will help you with that. Can I know your planned trip dates?

USER: I am willing to take-off on Oct 31 and again I will be retrieve on Nov 2.

ASSISTANT: Do you have any other requirements?

USER: I would like to fly in single connection flight.

ASSISTANT: May I know your name?

USER: Myself Laura Nelson.

ASSISTANT: Please wait for a minute.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry to say that, there are no flight's available based on your travelling dates.

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

ASSISTANT: Thank you for approaching us.

USER: You are most welcome.