You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, May I know your name?

USER: I want to travel for Houston, for my grand mother's 65th anniversary function, can you help me to book a flight ticket?

ASSISTANT: How can I help you today?

USER: Sure, I am Daniel Miller.

ASSISTANT: Sure, we are happy to help you in booking, can you share your journey details?

USER: My depart is from CA - OAK, on 12/141. Sorry for the inconvinience, My depart is from CA - OAK, on 12/14. And My arrival is at TX - HOU, on 12/16.

ASSISTANT: Thank you for sharing the details, please wait a while, I will check the availability of flight with the given requirements.

USER: Ok.

ASSISTANT: We are sorry to say, there is no flight found matching your requirements.

USER: Ok, thanks for the information.

ASSISTANT: Thank you for connecting with us. Have a great day.