You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: As I am turning to 60 year on Dec 25th, so I want to celebrate my birthday with my sons who are living at OAK, can you please assist me in finding a best airline which is suitable to my requirements?

ASSISTANT: Sure, may I know your planned travel dates?

USER: I want to start on Dec 24th and my return journey will be on Dec 26th.

ASSISTANT: Thank you, may I know your source airport code please?

USER: My source point will be DFW as it is the nearest airport from my home.

ASSISTANT: Do you have any limits on number of connections?

USER: Yes, I need a break with in my journey as I want to do shopping for my grand children.

ASSISTANT: May I know your name for the documentation purpose?

USER: Please confirm the flight ticket with the name Katherine Perez.

ASSISTANT: Do you have any specifications on your airline class preference?

USER: I am ok, with any type of class.

ASSISTANT: Sorry Perez, we regret to inform you that there is no flight available as per your specified dates.

USER: Ok, its very sad to here, but its ok, I will find out another alternative to reach my destination.

ASSISTANT: Welcone, thank you for reaching us.

USER: Any way thank you so much for your effort.