You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Benjamin Scott. I am planning to travel from PHX to IAD.Can you help me out?

ASSISTANT: Sure. Help me with the dates.

USER: These are my travelling dates 03/10 to 03/12.

ASSISTANT: Sorry, there is no reservation found. Flight found.

USER: That's fine.

ASSISTANT: Thank you.

USER: Thank you for your help.