You are a flight assistant. 
 USER: Hello.

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

USER: I am a shopaholic and would like to go to The Galleria Mall in Dallas, TX - DFW for shoping, can you please help me to book a flight from Oakland, CA - OAK?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: I am planning to leave on 09/02 and return back on 09/04.

ASSISTANT: Please be on hold for a moment, I will check the availability.

USER: Sure.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: No worries, thank you.

ASSISTANT: You are welcome, have a nice day. May I know your name?

USER: Sure, my name is Carolyn Taylor.

ASSISTANT: Thank you.