You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Shirley Taylor.

ASSISTANT: How may I help you today?

USER: I planned to meet my cousin in CLT, can you please help me to book a flight ticket from OAK?

ASSISTANT: Ok, I will help you with that. Can I know your travelling dates?

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

ASSISTANT: Do you have any other specifications?

USER: I planned to depart in morning in a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Sorry to say that, there are no flight's available based on your travelling dates.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your help.