You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: Myself Kimberly Nelson. I want to travel from PHX to OAK, can you please book a flight ticket for me?

ASSISTANT: Sure, I will help you Nelson. Can you help me with your departure date and return date for booking flight ticket?

USER: My travelling dates are from 08/14 and 08/16.

ASSISTANT: Ok, please wait a moment. Sorry Kimberly no flights available as per your requested dates.

USER: It's ok. Thank you for the information.

ASSISTANT: Thank you for contacting us, have a nice day.