You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you help me in booking my flight ticket from DTW to IAH?

ASSISTANT: Ok, may I know your travel dates?

USER: My trip dates will be Nov 12th to Nov 14th.

ASSISTANT: Is there any other specifications?

USER: My depart time should be in the morning.

ASSISTANT: May I know your good name?

USER: I am Samuel Phillips.

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

USER: Its ok, thank you.

ASSISTANT: Welcome, have a good day.