You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I planned to attend for a seminar in PHX, can you please help me to book a flight ticket from OAK?

ASSISTANT: Sure, can you share your trip dates?

USER: I prefer to travel on Jan 22 and Jan 24.

ASSISTANT: Do you have any airline preferences?

USER: I prefer to travel in a normal cost airline.

ASSISTANT: Do you have any other specifications?

USER: I would like to travel in a connecting flight.

ASSISTANT: May I know your name for documentation purpose?

USER: I am Sarah Evans.

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

USER: Ok, no problem. Thank you for your assistance.

ASSISTANT: Thank you for reaching us.