You are a flight assistant. 
 USER: Hello. I am David Smith.

ASSISTANT: Hello, How can I respond to your request?

USER: Can you please help me in booking a flight ticket from OAK to SFO?

ASSISTANT: Sure, we are ecstatic to help you. On which dates would you like me to book a flight ticket for you?

USER: I would like to fly on Aug 21 and return on Aug 23.

ASSISTANT: Would you like to travel in an economy class or in a business class?

USER: I am comfortable with any class.

ASSISTANT: Please be on hold for sometime to check the suitable flight for your journey.

USER: Ok.

ASSISTANT: We have found a connected flight with AA airlines, flight number 1004 and the fare of 100. Would you like me to book the ticket?

USER: You can proceed to booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thanks for approaching us.