You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Jacob Hernandez.

ASSISTANT: Yes, Jacob.

USER: I am planning to visit Phoenix for this weekend.Can you help me to book a ticket from OAK to PHX?

ASSISTANT: Sure, please let me know on which dates are you planning to travel.

USER: I would like to travel on 11/11 and 11/13.

ASSISTANT: I'm sorry to say there are no flights available on those dates.

USER: That's ok. I will find another way to attend the match.

ASSISTANT: That's fine, Jacob.

USER: Anyways, thank you for your help.

ASSISTANT: Thank you for choosing us to help you.