You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My name is Andrew Garcia. I would like to spend my Christmas eve with my family at Oakland. Can you help me in booking a ticket from ORD to OAK?

ASSISTANT: Sure, may I know your travel dates please?

USER: The journey dates are 12/23 and 12/25.

ASSISTANT: Thanks for waiting. I have found UA airlines which flies with one connection.

USER: Please book the ticket.

ASSISTANT: Sure, your flight ticket has been confirmed.

USER: Thank you for your assistance.

ASSISTANT: Thank you.