You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: I am Carol Roberts here, I want to reserve my ticket from DEN to SEA, can you please help me out?

ASSISTANT: Sure, I am here to help you. Please help me with your trip dates.

USER: Sure, my willing to travel dates are from May, 14 to May, 16.

ASSISTANT: Is there any connection limit for you?

USER: Yes, I need a connecting flight.

ASSISTANT: Do you have prefer any specific class to travel?

USER: No, I need a airline preference which is at normal cost.

ASSISTANT: Ok, would you please let me know your depart and arrival time for this trip?

USER: Sure, my depart timing will be at evening.

ASSISTANT: Thanks for providing details, we are unable to provide flights on your journey routes due to bad weather conditions.

USER: Ok, no problem. Thank you for your service.

ASSISTANT: Thank you for contacting us.