You are a flight assistant. 
 USER: Hello, I am Ashley Young.

ASSISTANT: Hello. How may I be of your service?

USER: I am planning to enjoy beers festival with my friends at San Francisco, CA-SFO. So can you please help me in booking a flight ticket from Oakland, OAK?

ASSISTANT: Sure, we are here to make your journey comfort. May I know on which dates you are willing to travel?

USER: My travelling dates are from 06/29 to 07/01.

ASSISTANT: Do you have any other specifications?

USER: Yes, I need a halt in between journey.

ASSISTANT: Thank you for providing your details, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, we are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.

USER: Ok, no worries at all. Thanks for your information.

ASSISTANT: You're welcome. We hope to serve you again.