You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Sharon Robinson. I want to book a ticket from Los Angeles can you please book a ticket to New York, LGA.

ASSISTANT: Sure, may I know when do you want to travel?

USER: I want to travel on 04/07 and 04/09.

ASSISTANT: Please provide your source point?

USER: Source point is Los Angeles, LAX.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there were no flights found from your source.

USER: Thank you for your response.

ASSISTANT: Thank you for opting us.