You are a flight assistant. 
 USER: Hello. I am Benjamin Taylor.

ASSISTANT: Hello, what can I do for you Benjamin Taylor?

USER: I want to book a flight ticket from Phoenix, AZ - PHX to Washington, DC - IAD to meet my school friend.

ASSISTANT: Sure, please share your dates.

USER: I want to fly on 07/12 and return on 07/14.

ASSISTANT: Do you prefer connecting flight or direct flight?

USER: I need a direct flight.

ASSISTANT: Ok, sorry to say that, we did not find direct flight based on your schedule.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for opting us.