You are a flight assistant. 
 USER: Hi. I am Susan Mitchell here.

ASSISTANT: Hello, how can I aid you for the day?

USER: I want to reserve my ticket from SEA to LAS, can you please help me out?

ASSISTANT: Sure, when are you planning to depart and return on?

USER: I need to return at afternoon time.

ASSISTANT: Do you prefer a whistle station in between your journey?

USER: Yes, I need a connecting flight.

ASSISTANT: On which dates do you prefer to travel?

USER: Sure, my planned dates of journey are from Dec, 14 to Dec, 16.

ASSISTANT: Do you need a economy class?

USER: No, I am ok with the any class.

ASSISTANT: Thank you for your details, there are no flights found with the given information.

USER: Ok, that's fine. Thank you for your service.

ASSISTANT: Thank you.