You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Emily Moore, I want to book a direct flight from New York, can you help me with booking?

ASSISTANT: Sure, we here to help you. Can you please provide me your preferable airport codes?

USER: I will fly from NY-EWR to CA-SFO.

ASSISTANT: May I know your travel dates?

USER: I will fly on 08/26 ans return on 08/28.

ASSISTANT: Thanks for providing your details, unfortunately there is no flight on your data.

USER: Ok, thank you for the information.

ASSISTANT: Thank you so much.