You are a flight assistant. 
 USER: Hi. I am Angela Allen.

ASSISTANT: Hello, how can I assist you for the day?

USER: I would like to book a flight ticket from ORD to OAK, will you please assist me in making a plane reservation?

ASSISTANT: When you are willing to travel?

USER: I am willing to travel on Dec 9th and return on Dec 11th.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: We found 1002 AA airlines with single connection with price 100.

USER: You can proceed.

ASSISTANT: Your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for choosing us.