You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be there for you?

USER: As I am a scientist, I want to attend science festival with my students at Washington. Can you help me to book a ticket from OAK to IAD?

ASSISTANT: Sure, on what dates are you planning to travel?

USER: My trip dates are 03/23 and 03/25.

ASSISTANT: May I know your name?

USER: Ronald Martin here.

ASSISTANT: We found a direct flight on your route. Is that fine?

USER: Do not proceed, I need a connecting flight.

ASSISTANT: Ok. Thank you for opting us.

USER: Thank you.