You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you?

USER: I am Donald Clark. I want to book a flight ticket from OAK to PHX. Could you help me in booking?

ASSISTANT: Sure, may I know when you are willing to travel?

USER: My travelling dates are from 09/23 to 09/25.

ASSISTANT: We found a flight in an airline Spirit with 1006 number having a single connection price of 300. Shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us.