You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: I am Andrew Perez. I have planned for going to Oakland for holiday trip. Can you please book a flight ticket?

ASSISTANT: Sure, please provide the airport codes?

USER: I want to travel from CLT to OAK.

ASSISTANT: Please provide the travel dates?

USER: I would like to travel on 06/12 and please book a return ticket on 06/14.

ASSISTANT: I have found a flight with price 100 and one connection. Can I book it?

USER: Sure, you can proceed with that flight.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you for your service.

ASSISTANT: Thanks for reaching us.