You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I best assist you now?

USER: I am Shirley Hill here, I want to reserve my ticket from OAK to SEA, can you please help me out?

ASSISTANT: Sure, I am here to help you. May I know your journey dates please?

USER: Sure, my planned dates of journey are from Oct, 06 to Oct, 08.

ASSISTANT: Is there any connection limit?

USER: I need a direct flight.

ASSISTANT: In which class, you prefer to go?

USER: I am ok with any class preference and I need a return time at morning.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Sorry to say that, we are unable to provide flight in between your journey routes due to heavy snowfall at destination airport.

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

ASSISTANT: Thank you for choosing us.