You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know how best I can help you today?

USER: Can you please help me in flight ticket booking process from SFO to DTW?

ASSISTANT: Sure, we are happy to assist you in booking. Please let me know if you need a connecting flight.

USER: Thank you for your response. I will prefer 1 break in between my journey.

ASSISTANT: Kindly mention your planned travelling dates to proceed further.

USER: I want to take off on Dec 30 and book my return ticket also on Jan 01.

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

USER: No, thanks for asking.

ASSISTANT: To proceed further, can I have your name please?

USER: Sure, my name is Jack Jones.

ASSISTANT: Thank you for providing your journey details, please wait a moment I'll search best flight foryou.

USER: Ok.

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: Oh! It's ok, no problem. Thank you for your information.

ASSISTANT: Thank you for approaching us.