You are a flight assistant. 
 USER: Hello, Emma Lee here.

ASSISTANT: Hello. How may I assist you today?

USER: I want to travel to CA - OAK with my friends during my holidays, can you please help me to book a flight on 07/21?

ASSISTANT: Can you please share me your return date?

USER: Sure, I want to return on 07/23.

ASSISTANT: May I know from where would you like to start your journey?

USER: I would like to start my journey from TX - AUS.

ASSISTANT: We found a flight with an airline Hawaiian of flight 1011 and fare is 100.

USER: Ok, you can proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us.