You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER:  I am Sharon Lewis want to book a ticket from CA-OAK to DC-IAD. Can you book a connecting flight?

ASSISTANT: Sure, may I know your trip dates?

USER: My trip dates are 05/23 and 05/25.

ASSISTANT: We found a flight on southwest airline, flight number 1000 with the fare of 100. Can I reserve you ticket?

USER: Sure, confirm my booking.

ASSISTANT: Your ticket has been reserved.

USER:  Thank you for booking.

ASSISTANT: Thank you for reaching us.