You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Ashley Carter.

ASSISTANT: How can I serve you?

USER: I need to attend memorial services of my grand father at Washington, DC-IAD.

ASSISTANT: Ok.

USER: Could you please help me with booking a flight ticket from Oakland, CA-OAK?

ASSISTANT: Sure, We are here to help you. May I know your travelling dates?

USER: My travelling dates are 11/20 and 11/22.

ASSISTANT: Do you have any preferences?

USER: I need a halt in between the journey.

ASSISTANT: there is a flight 1013 in UA airline and price 100 with a connection. Shall I proceed?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.