You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I'm Donna Wilson.

ASSISTANT: How can I help you?

USER: Can you please help in booking a flight ticket to LGA to meet my childhood friends?

ASSISTANT: Provide me the details of journey.

USER: I am planning from 04/01 to 04/03.

ASSISTANT: May I know the departure airport code?

USER: My origin airport code is LAX.

ASSISTANT: Sorry, there is no flight found.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you.