You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am looking for a flight from OAK to IAD, can you reserve a flight ticket please?

ASSISTANT: Sure, I am here to help you out. Please share me your trip dates.

USER: My trip dates are from 11/23 till 11/25.

ASSISTANT: Please wait a moment.

USER: I need a direct flight in  my trip.

ASSISTANT: May I know your name?

USER: My name is Alexander Parker.

ASSISTANT: Sorry Parker, there is no flight in your route.

USER: Not an issue, thank you for your information.

ASSISTANT: Thank you for reaching us.