You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Anna Robinson.

ASSISTANT: How can I help you?

USER: I am planning to celebrate my birthday celebration at Atlanta, can you please book me a ticket from LGA to ATL?

ASSISTANT: Sure, I will help you. May I know your journey dates?

USER: I want to depart on Aug 20 and would like to return on Aug 22.

ASSISTANT: Do you have any preferences?

USER: I prefer connecting flight on this route.

ASSISTANT: Ok, Please wait a minute.

USER: Sure, I will wait for your information.

ASSISTANT: Thanks for waiting, There are no flights found with your given details.

USER: Ok, not an issue. I will find any alternate for this trip. Thank you for providing information.

ASSISTANT: Ok, Thank you.