You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Myself Steven Garcia. Can you please help me with flight ticket booking from OAK to LGA?

ASSISTANT: Sure, may I know your journey dates?

USER: Sure, I need to travel on dates of 04/24 and 04/26.

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: My pleasure.