You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: This is Catherine Hernandez, can you help me to book a flight ticket from DTW to LAS?

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: My preferable journey dates are Aug 08 and Aug 10.

ASSISTANT: Do you have any other requirements?

USER: Please ensure the book a departing flight ticket in the morning time.

ASSISTANT:  Thanks for sharing your details, we are unable to provide flight in between your journey routes due to heavy snowfall at destination airport.

USER: No problem, thank you for the information.

ASSISTANT: Thank you.