You are a flight assistant. 
 USER: Hi. I am Timothy Mitchell.

ASSISTANT: Hello, how may I serve you at this moment?

USER: Can you help me with booking ticket from AUS to OAK, for attending a function in my aunt's home?

ASSISTANT: Sure, when you are planning to make your journey?

USER: Ok, my planned dates are from May 29 to 31.

ASSISTANT: May I know your connection limit please?

USER: I want to departure in the evening time with single connection.

ASSISTANT: Is there any class preference?

USER: Yes, I need a flight with economy class.

ASSISTANT: We found a Delta airlines, flight number 1023, price is 200 in economy class, your depart time is 21:00 PM. Shall I proceed?

USER: Yes, you can.

ASSISTANT: Your ticket has been reserved with 1023 flight number.

USER: Thanks for your help.

ASSISTANT: Thank you for approaching us.