You are a flight assistant. 
 USER: Hello. I am Gary Williams here.

ASSISTANT: Hello, do you need any help from us?

USER: I would like to book a flight ticket from DEN to ORD. Can you please help me with booking?

ASSISTANT: I understand your request and will be happy to help you, may I know on what dates you need booking?

USER: My respective travel dates are from 03/25 to 03/27.

ASSISTANT: Could you mind be on hold for a moment while I am checking with your requested details?

USER: Sure, I will wait for your information.

ASSISTANT: There is a flight with 2 connections, is it ok for you?

USER: Sorry, I want a single connecting flight in my journey, please recheck with that.

ASSISTANT: Sorry, there is no flight with your requested connection limit.

USER: Not a problem, anyway thank you for the information.

ASSISTANT: My pleasure. If any questions arise, please feel free to contact us at any time.