You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I'm George Green.

ASSISTANT: Green, how can I assist you?

USER: I need a non-stop flight to HOU, can you please find me a flight?

ASSISTANT: Sure, please let me know your itinerary dates.

USER: My travel dates are 08/26 and 08/28.

ASSISTANT: May I know your origin and destination airport codes?

USER: My source airport code is PHX and destination is HOU.

ASSISTANT: Please hold on for a while, let me check for available flights.

USER: Sure.

ASSISTANT: Flight 1007 of Delta airlines is providing service from PHX to HOU with 1 connection.

USER: But I want a direct flight as I said before, please search for it.

ASSISTANT: Let me check.

USER: Sure.

ASSISTANT: Sorry, no flight is available.

USER: That's ok, thank you for your service.

ASSISTANT: Thank you for contacting us.