You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Angela Hernandez.

ASSISTANT: How can I assist you today?

USER: Can you please help me in booking a flight ticket from OAK to JFK locations?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: My travelling dates are from 05/21 and 05/23.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, there is no fights found under your preferable details.

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

ASSISTANT: Welcome, have a great day.