You are a flight assistant. 
 USER: Hi. I am Lisa Wilson.

ASSISTANT: Hello Lisa, how may I help you today?

USER: I am looking for a flight from PHL to EWR, can you reserve me a flight ticket please?

ASSISTANT: Sure, could you please provide me with your dates of travel?

USER: My trip dates are from 06/10 till 06/12.

ASSISTANT: Please be hold on for a moment. Sorry Lisa, I cannot find any flight as per your travelling details.

USER: That's ok, no problem. Thank you for your information.

ASSISTANT: You are welcome always.

USER: Thank you for your information.