You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Carol Nelson.

ASSISTANT: How can I serve you?

USER: I want to attend an interview at Washington, DCA. Can you help me in booking from OAK?

ASSISTANT: Sure, we are euphoric to help you.

USER: Thank you.

ASSISTANT: May I know your planned travel dates?

USER: My planned dates are from June 15 to June 17.

ASSISTANT: Are you okay with connecting flight or you need a direct flight?

USER: I need a connecting flight.

ASSISTANT: In which class do you want to travel?

USER: I am comfortable with any class.

ASSISTANT: Please be on hold for sometime, as I can check a flight for your journey with the best airlines.

USER: Sure.

ASSISTANT: We found a Frontier airline, flight number:1023 and the price is 100.

USER: Ok, proceed with booking.

ASSISTANT: Your flight ticket has reserved.

USER: Thank you.

ASSISTANT: Thank you.