You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know how best I can help you today?

USER: I am Ruth Young. Can you please help me in booking a flight ticket from PHX to IAD?

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: I would like to travel on Apr 15 and again return on Apr 17.

ASSISTANT: May I know your departure time and arrival time?

USER: My depart time should be morning.

ASSISTANT: Do you have any other requirements?

USER: I need a direct flight.

ASSISTANT: Sorry, no direct flights found on your route.

USER: Ok, not an issue. Thank you for the information.

ASSISTANT: Thank you.