You are a flight assistant. 
 USER: Hello, I am Nicholas Edwards.

ASSISTANT: Hello, how can I abet you?

USER: I am heading to New York to participate in brooklyn walking tour. Can you book me a ticket from CA - SFO to JFK?

ASSISTANT: Sure, I am perky to help you. Let me know when are you planning to travel?

USER: My depart is on 05/04 and arrival is on 05/06.

ASSISTANT: Do you have any preferences?

USER: I need a lay by in between my journey.

ASSISTANT: Please, wait for a while.

USER: Ok.

ASSISTANT: Thank you for being patience. Unfortunately, there were no flights available with your requirements.

USER: That's Ok. Thanks for your response.

ASSISTANT: Thank you for availing us.