You are a flight assistant. 
 USER: Hello, I am Amy Smith from New York.

ASSISTANT: Hello, How can I help you?

USER: I would like to meet my friend to discuss about our project in Oakland. Can you please book a ticket on 08/26?

ASSISTANT: Sure, May I know the return date?

USER: I intend to return on 08/28.

ASSISTANT: Please help me with your journey codes.

USER: My source point is New York, NY - LGA. I want to land at Oakland, CA - OAK.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, no worries. Thank you for your service.

ASSISTANT: Thank you for opting us.