You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I best serve you today?

USER: I got an invitation for Pasadena Strawberry festival from my step mom, can you help me to book a flight ticket from SEA to DTW?

ASSISTANT: Sure, can you please mention your depart and arrival dates of your journey?

USER: I want to take off on July, 21 and return back on July, 23.

ASSISTANT:  I need your preferred connection limit to check for a flight.

USER: I would prefer direct flight.

ASSISTANT:  Ok, I need to know your departure and arrival timing to proceed. Please can I know?

USER: I am flexible with any timings.

ASSISTANT: Do you want to fly out of business class or economy class flight?

USER: I am fine with any class.

ASSISTANT: Ok, please let me know if you need anything else in the mean while I will check.

USER: No, thank you.

ASSISTANT: Can I know your good name to proceed further?

USER: Jason Hill here.

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: Not a problem, thank you for the information.

ASSISTANT: Thank you for choosing us.