You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I would like to celebrate my birthday at Washington, please help me in booking a ticket from OAK to IAD.

ASSISTANT: Sure, please share me your trip dates.

USER: My planned trip dates are on Apr 2 and Apr 4.

ASSISTANT: May I know your airlines specifications?

USER: Any airlines is comfortable for me.

ASSISTANT: Please share me your connection limit?

USER: I need a flight with single connection.

ASSISTANT: Is there any class specifications for you?

USER: No, thank you for asking.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: My name is Anna Scott.

ASSISTANT: We found a AA airlines and 1016 is flight number with a fare of 100. Shall I proceed?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket is confirmed with an economy class.

USER: Thank you for your assistance.

ASSISTANT: Thank you for reaching us.