You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Thomas King. I like gambolling and found New York has best casinos in the country, so planning to go and experience it. Could you please help me with flight tickets booking?

ASSISTANT: May I know your desired travel dates please?

USER: My trip dates are 04/14 to 04/16.

ASSISTANT: Can I know your airport codes please?

USER: My source is EWR and destination is PHL.

ASSISTANT: Do you have any other specifications?

USER: I need a direct flight.

ASSISTANT: Sorry to say, there is no flight on your desired travel dates.

USER: No issue, thank you for checking.

ASSISTANT: Thank you for contacting us.