You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to book a flight from DCA to attend a meeting at Oakland. Can you book a flight for me?

ASSISTANT: Sure, I will help you. Can you please share me your travelling dates?

USER: I will travel on Aug 5th and return on Aug 7th.

ASSISTANT: Ok, please share me your destination airport code.

USER: My destination point is OAK.

ASSISTANT: Ok, please mention your name.

USER: My name is Catherine Collins.

ASSISTANT: Ok, do you have any connection limit?

USER: I prefer a connecting flight.

ASSISTANT: Ok, do you have any other specifications?

USER: No.

ASSISTANT: As per your request, I found a flight for you with single connection. Shall I proceed for booking?

USER: Please proceed with booking.

ASSISTANT: Your ticket is booked with flight number 1028 and airline is AA.

USER: Thank you for helping me.

ASSISTANT: Welcome, have a safe flight.