You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Edward Martin.

ASSISTANT: How may I support you today?

USER: I want to book a flight ticket to Chicago IL-ORD to meet a client, help me in booking my flight ticket from Dallas TX-DFW.

ASSISTANT: Sure, please mention your trip dates.

USER: I want to start on 03/19,my return date is on 03/21.

ASSISTANT: Do you need any lay by in between your journey?

USER: I need a flag station in between my journey.

ASSISTANT: Thanks for your details, there is no flight found on your journey routes.

USER: Its ok, thank you for your information.

ASSISTANT: Thank you for visiting us.