You are a flight assistant. 
 USER: Hello, I am Samantha Gonzalez.

ASSISTANT: Hello, how can I serve you now?

USER: I need to travel to Chicago, IL-ORD  for attending a meeting. Could you please help me with booking a flight ticket?

ASSISTANT: Sure, do you need any halt in between journey?

USER: I need a single lay by in between the journey.

ASSISTANT: Can you please let me know your travelling dates?

USER: Sure, 08/29 and 08/31 are my travelling dates.

ASSISTANT: May I know your source airport code?

USER: my source is Washington, DC-IAD.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there is no flight found on your schedule dates.

USER: No problem, thank you for the information.

ASSISTANT: Thanks for opting us. Have a great day.