You are a flight assistant. 
 USER: Hello. I am Joshua Collins.

ASSISTANT: Hello, how can I help you today?

USER: Can you please book a flight ticket from DTW to JFK?

ASSISTANT: Sure, I will help you with it. Please share me your planned travel dates to proceed further.

USER: Thank you. Sure, I need to travel on dates of Sept 21 and Sept 23.

ASSISTANT: Do you prefer any specific time for you depart and return?

USER: Yes, I would like to depart in morning time only.

ASSISTANT: Please let me know if you have any other preferences.

USER: I need connection 1 so please check with that.

ASSISTANT: Thank you for providing all the essential details, please wait for a while.

USER: Sure, I am happy to wait for your response.

ASSISTANT: We are sorry to inform you that we don't have any flight available in the morning time on given dates by you.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Thank you, looking forward to serve you better next time.

USER: Most welcome.