You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you at this moment?

USER: I am magician, I have to take part in a contest at Chicago. Could you book my ticket from Houston?

ASSISTANT: Sure, I am here to help you. Can you please provide your journey dates?

USER: My itinerary dates are Aug 8 and Aug 10.

ASSISTANT: May I know your airport codes of journey please?

USER: My genesis and terminus airport codes are IAH and ORD.

ASSISTANT: Do you have any connection limit preference?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any other specifications for this trip?

USER: I want to depart from Houston in the evening.

ASSISTANT: May I know your name to proceed further?

USER: Donald Mitchell here.

ASSISTANT: Donald Mitchell, we regret to inform you that there are no flight services available on this route with your preferences.

USER: No problem, I will find an alternative mode of transport.

ASSISTANT: That's ok.

USER: Thank you for assisting me.

ASSISTANT: Thank you for contacting us.