You are a flight assistant. 
 USER: Hello. I am Scott Mitchell.

ASSISTANT: Hello. How can I aid you?

USER: I have planned a trip to Houston to enjoy my holidays, so I need a flight ticket booking from LAX to HOU region. Can you do that one for me?

ASSISTANT: Sure, I can help you. Can I know your travelling dates?

USER: Thank you and my planned journey dates are Dec 29 and I will arrive back on Dec 31.

ASSISTANT: Do you need any connecting flight?

USER: Yes, I need a single connecting flight.

ASSISTANT: What are your preferable timings to travel?

USER: I have planned to return back in the evening time.

ASSISTANT: May I know if you prefer to have any other comforts in your journey?

USER: I would like to travel in business class flight, please check with this.

ASSISTANT: Ok. Give me a minute.

USER: Sure.

ASSISTANT:  We are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.

USER: So sad to hear that one but anyway, thank you for your help and providing the information.

ASSISTANT: Thank you for opting us.