You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I want to book a flight ticket from PHL to LGA. Can you help me in that?

ASSISTANT: Sure, can I know the travel dates please?

USER: My trip dates are Feb 26 to Feb 28.

ASSISTANT: May I know your name please?

USER: Myself Sarah Phillips.

ASSISTANT: Sorry, there are no flights available on your dates.

USER: Ok, not an issue.

ASSISTANT: Thank you for approaching us.

USER: Thank you for checking.