You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Emily Moore.

ASSISTANT: How may I serve you today?

USER: I am planning to visit Washington IAD from Phoenix PHX. Can you find a flight ticket for me?

ASSISTANT: Sure, may I know your trip dates?

USER: Ok, my planned trip dates are on Aug 26 and return on Aug 28.

ASSISTANT: Do you need a stopover?

USER: Yes, I need a single connecting flight to travel.

ASSISTANT: May I know your depart and return timings?

USER: Yes, I want to return in the Evening time.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Is there any other requirements?

USER: No, I don't have any other requirements.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: That's fine, no problem. Thank you for your information.

ASSISTANT: Thank you for approaching us.