You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Please reserve me a flight ticket from IAD to IAH.

ASSISTANT: Sure, can you please mention your departure and arrival dates of your journey?

USER: My travel dates are Mar 16 and Mar 18.

ASSISTANT: Do you need any flag stop in between journey?

USER: I prefer lay by in between my journey.

ASSISTANT: Is there any other specifications regarding your journey?

USER: I would like to depart in the morning time.

ASSISTANT: May I know your name for the documentation process?

USER: I am Gregory Wright.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.