You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Mary Hill from Detroit.

ASSISTANT: How may I assist you at this moment?

USER: I would like to visit PHL next week for my film shooting purpose, can you please book a flight ticket from DTW?

ASSISTANT: Sure, I am glad to help you with that.

USER: Thank you.

ASSISTANT: Can you please provide your preferable departure and return dates of travelling?

USER: I want to take off on 01/14 and help me in return flight ticket also on 01/16.

ASSISTANT: Please wait a moment to check the flights availability.

USER: Ok.

ASSISTANT: We regret to inform you that, there are no flights moving to your region with your planned dates of travelling.

USER: Oh! It's ok no problem, I will go with another airline. Thank you for your information.

ASSISTANT: Thank you for approaching us, hope you have a great day.

USER: You are welcome.