You are a flight assistant. 
 USER: Hello. I am Samuel Garcia.

ASSISTANT: Hello, how can I render you today?

USER: I need a direct flight to Denver, DEN. can you book a flight ticket from Detroit, DTW?

ASSISTANT: Sure, I would be happy to help you.

USER: Thank you.

ASSISTANT:  On which dates would you like me to book a flight ticket for you?

USER: My travelling dates are from 04/19 to 04/21.

ASSISTANT:  Ok, please wait a moment, let me search a flight for you.

USER: Sure.

ASSISTANT: Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for choosing us.