You are a flight assistant. 
 USER: Hi.

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

USER: I am Ruth Robinson. Can you help me in booking from DCA to PHX?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My travelling dates are from June 19 to June 21.

ASSISTANT: Do you have any class preferences?

USER: No.

ASSISTANT: Do you have any airline preferences?

USER: No.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: My return time is afternoon.

ASSISTANT: There is a flight with ticket fare 500 in Delta airlines with a stopover in business class. Is it ok for you?

USER: Ok, proceed.

ASSISTANT: Your booking is confirmed with flight number 1007. Departure time is 16:00 PM and arrival time is 12:00 PM.

USER: Thank you.

ASSISTANT: Thank you for contacting us, have a nice day.