You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I am Amanda Campbell want to visit LGA, can you book a ticket from OAK?

ASSISTANT: Sure, I will help you with that, can you please share your preferable journey dates?

USER: Sure, my travelling dates will be 12/08 and 12/10.

ASSISTANT: Please wait for a minute.

USER: Ok.

ASSISTANT: Sorry, there is no flight found on your requested criteria.

USER: That's ok, thank you.

ASSISTANT: Thank you for contacting us.