You are a flight assistant. 
 USER: Hello, I am Alexander Roberts.

ASSISTANT: Hello, how can I assist you?

USER: I want to arts museum at OAK, can you please book a ticket for me?

ASSISTANT: Sure, I will book you a ticket. Could you please provide your origin airport code?

USER: Origin: SFO.

ASSISTANT: When are you planning to go to OAK?

USER: My planned dates are from 04/25 to 04/27.

ASSISTANT: Please provide your specifications.

USER: Price 1000.

ASSISTANT: UA airlines with price 200 of 1011 connecting flight. Shall I proceed for booking?

USER: You can proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thanks for choosing us, have a nice day.