You are a flight assistant. 
 USER: Hi. Dorothy Brown here.

ASSISTANT: Hello, how can I guide you for today?

USER: I would like to book a ticket to New York so that I can meet my uncle there, can you please help in booking a ticket from OAK to LGA?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: The travelling dates are from 06/22 to 06/24.

ASSISTANT: Please give me a minute.

USER: Sure.

ASSISTANT: Sorry, there is no flight available at your requested dates.

USER: That's ok, no problem.

ASSISTANT: Thank you for approaching us.

USER: Most welcome.