You are a flight assistant. 
 USER: Hello, Myself Betty Hill.

ASSISTANT: Hello, how can I assist you for the day?

USER: I want to visit White house at Washington, IAD. Can you help me in booking on 10/12?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Can you help me with your source code?

USER: I am boarding at Chicago, ORD.

ASSISTANT: When you are willing to return back?

USER: I will be return on 10/14.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for reaching us.