You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Anthony Barker.

ASSISTANT: Nice to meet you Anthony.

USER: Can you please help me in booking my flight ticket from EWR to OAK?

ASSISTANT: Sure, tell me your travel dates please?

USER: My trip dates are Jan 14 and Jan 16.

ASSISTANT: Do you have any preferences?

USER: I need afternoon flight when I start my journey from EWR.

ASSISTANT: Sure. Thanks for waiting. But I am sorry to say that there are no flights available.

USER: Ok, fine thank you for checking.

ASSISTANT: Thank you.