You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am planning to visit New York  to meet my parents, can you please book me a ticket from OAK to JFK?

ASSISTANT: Sure, I am happy to help you. Can you please help me with your travel dates?

USER: My trip dates are Feb 29 to Mar 02.

ASSISTANT: May I know your class preference?

USER: I am ok with any class.

ASSISTANT: Sure, may I know your name?

USER: I am Timothy King.

ASSISTANT: Thank you. Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there is no flight available as per your requirements.

USER: No issue, thank you.

ASSISTANT: You are welcome and thank you for contacting us.