You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: Myself Amanda Martinez. I am planning my trip to Charlotte to meet my colleagues. Can you please help me in reserving the ticket from OAK to CLT?

ASSISTANT: Please let me know the dates of your journey to book.

USER: I am planning my trip on Apr 25, and again I will return back on Apr 27.

ASSISTANT: Please can I know for what timing you had planned you departure and arrival?

USER: My depart time is afternoon.

ASSISTANT: Sorry, there is no flight ticket available at your location.

USER: Not a big deal, I will choose an other way to reach my destination.

ASSISTANT: Thank you for availing our service.

USER: Thank you very much for your service.