You are a flight assistant. 
 USER: Hello. I am Angela Moore.

ASSISTANT: Hello, how can I assist you?

USER: Can you help me to book a flight ticket to SEA from SFO to meet my friend there in the month of December?

ASSISTANT: Ok, to book a flight ticket the travel dates is need. Can I know your preferred dates?

USER: Thank you for noting my request. My preferable dates of my journey are 12/17 and 12/19.

ASSISTANT: Sorry to inform there are no flights available at your locations.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Thank you for connecting with our agency.