You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Ashley Wilson.

ASSISTANT: How may I help you?

USER: I have to go to New York city, can you please help me in searching a flight from PHL to LGA?

ASSISTANT: Sure, I will help you out.

USER: Thank you.

ASSISTANT: May I know your travelling dates please?

USER: My trip dates are 12/22 and 12/24.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Sorry, there are no flights found.

USER: It's ok, thank you for searching for the flight.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.