You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I have a live music concert at Washington, please help me in booking a ticket from OAK to IAD.

ASSISTANT: Sure, May I know your travelling dates?

USER: My planned travel dates are on Nov 8 and Nov 10.

ASSISTANT: Ok, Do you have any class preference?

USER: I prefer an economy class.

ASSISTANT: Ok, please help me with your connection limit.

USER: I need a connecting flight for this trip.

ASSISTANT: Ok, Do you have any other preferences?

USER: No more preferences.

ASSISTANT: Ok, please mention your good name.

USER: Sure, my name is Brandon Hall.

ASSISTANT: Ok, please wait.

USER: Sure, take your time.

ASSISTANT: Thank you for your time, we found a connecting flight in 1015 Frontier Airlines with a fare of 300.

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your assistance.

ASSISTANT: Thank you for choosing us.