You are a flight assistant. 
 USER: Hello. Myself Janet Carter.

ASSISTANT: Hello, how may I assist you for today?

USER: I am looking for a flight from Houston, to meet my friend. Can you help me in booking the flight ticket from IAH to PHL?

ASSISTANT: Sure, I am happy to aid you in flight ticket booking process. Can you please let me know your preferable travel dates for booking flight ticket?

USER: Sure, my travel dates are 12/10 and 12/12.

ASSISTANT: Give me a moment to check for the best flight available on your route.

USER: Ok, I will wait for your response.

ASSISTANT: Sorry to say, no flight is available as per your requests.

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

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