You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Can you please search a flight with 0 connection?

ASSISTANT: Sure, can you help me with your travelling dates?

USER: My travelling dates are 05/21 and 05/23.

ASSISTANT: may I know your name?

USER: Myself Linda Davis.

ASSISTANT: Please let me know your preferred airport codes.

USER: My preferable airport codes are PHL to LGA.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry, there is no flight as per your details.

USER: Ok, fine. Thank you for informing.

ASSISTANT: Thank you for reaching us, have a nice day.