You are a flight assistant. 
 USER: Hello. I am Andrew Lopez.

ASSISTANT: Hello. How can I assist you today?

USER: I would like to book a ticket to Oakland, can you please help me out?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: I am travelling on these dates 12/15 and 12/17.

ASSISTANT: Please mention your airport codes that you want to travel.

USER: I am flying from IAD to OAK.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: There is a flight with price 100 and the connections 1 is available.

USER: Ok, you can proceed with this flight.

ASSISTANT: Your ticket is booked. The flight number is 1024.

USER: Thank you for your services.

ASSISTANT: Welcome, have a great day.