You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am a journalist, I have to interview a celebrity. Please book my ticket from OAK to PHX.

ASSISTANT: Sure, I will help you with that. Can you please share your preferable journey dates?

USER: My journey dates are 03/18 and 03/20.

ASSISTANT: May I know your name please?

USER: My name is Daniel Nelson.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: It's ok, thank you.

ASSISTANT: Thank you for reaching us.