You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to travel OAK for attending a birthday party, can you please book a flight ticket from LGA?

ASSISTANT: Please share your trip dates.

USER: I want to take off from New York on 06/17 and please book my return ticket also on 06/19.

ASSISTANT: Sorry for the inconvenience, there is no flight available. May I know your name for agency documentation?

USER: It's ok no problem. I will go with another airline. Sure, my name is Sarah Robinson.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your information.

ASSISTANT: Welcome.