You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please help me in reserving the ticket from DEN to IAD?

ASSISTANT: Can you share your trip dates?

USER: I would like to travel on July 30 and again I will return back on Aug 1.

ASSISTANT: Do you need any connections?

USER: I am comfort to travel in single connection flight.

ASSISTANT: May I know your name?

USER: Myself Brandon Collins.

ASSISTANT: Sorry, there is no flight found with your details.

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

ASSISTANT: Thank you.