You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How may I render you?

USER: I am Christopher Miller. I need to need to book a flight ticket to attend a conference meeting at Chicago ORD. Can you please help me for booking?

ASSISTANT: Sure, I will help you with that. Let me know your boarding point?

USER: My destination point is ORD. My source point is DFW.

ASSISTANT: Do you need a stopover in between your journey?

USER: Yes, I need a single stop over.

ASSISTANT: What are your planned trip dates?

USER: I would like to travel on 11/06 to 11/08.

ASSISTANT: Ok, please wait a moment. let me search a flight for you.

USER: Sure.

ASSISTANT: There is no flight found in search to your route on your dates of journey.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for opting us, Have a great day!.