You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Christopher Clark here.

ASSISTANT: How may I be of your assistance?

USER: I would like to prefer a morning time flight for my business trip. So can you help me in booking the flight ticket?

ASSISTANT: Sure, I am here to help you in booking.

USER: Ok.

ASSISTANT: Please share your planned travelling dates to proceed further.

USER: The travel dates are from Jan 05 to Jan 07.

ASSISTANT: Kindly mention your source and destination airport codes.

USER: The airport codes are from IAH to CLT.

ASSISTANT: Do you need a stopover in between your journey?

USER: I would like to prefer a stopover in my journey.

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

USER: No, that is it.

ASSISTANT: Ok, please wait a moment I'll search best flight for you.

USER: Sure.

ASSISTANT: Thank you for waiting, we are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.,.

USER: Not a problem. Thank you.

ASSISTANT: Thank you for availing us.