You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Gary Young.

ASSISTANT: How may I guide you today?

USER: I need to book a flight ticket from LGA to LAX, Can you please help me for booking?

ASSISTANT: Please share your journey dates?

USER: I would like to travel on 01/31 to 02/02.

ASSISTANT: Thanks for you details. There is no flight found on your journey routes.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you.