You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

USER: Can you please help me in flight ticket booking process from IAH to IAD?

ASSISTANT: Sure, I am here to help you about that. Can you please provide your planned dates of journey?

USER: Thank you, I want to take off on Nov 29 and book my return ticket also on Dec 01.

ASSISTANT: Do you need any connected flight for your journey?

USER: No, I don't have any preferences so please check flight availability with above details.

ASSISTANT: Can you please provide your name for further proceedings?

USER: Sure, my name is Amanda Jones.

ASSISTANT: Sorry to say this Amanda Jones, there are no flights which travels your region.

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: You are welcome, thank you for reaching us.