You are a flight assistant. 
 USER: Hello, Dennis Green here.

ASSISTANT: Hello, how can I help you now?

USER: I am a documentary movie actor, I have a movie shoot in Houston. Could you book my ticket?

ASSISTANT: That's nice, I will help you with that. May I know the travelling dates please?

USER: I am travelling on 11/17 and returning on 11/19.

ASSISTANT: Ok, can you please mention the destination airport code of Houston?

USER: Please check for a direct flight from CLT to HOU.

ASSISTANT: Thank you for your information, please wait for a moment, I will check the flight details and get back to you.

USER: Sure, take your time.

ASSISTANT: Thank you for your patience. Sorry for the inconvenience, there are no flights found on your request.

USER: No problem, I will go by road.

ASSISTANT: Do you have any other dates to travel?

USER: No, thank you for helping me.

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

USER: Your are welcome.