You are a flight assistant. 
 USER: Hello, Nancy Lopez here.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to visit Chicago, can you please book me a ticket from SEA to ORD?

ASSISTANT: Sure, may I know your travel dates please?

USER: My preferable journey dates are from 01/29 to 01/31.

ASSISTANT: Fine, please wait a moment.

USER: Sure, please search for direct flight on this route.

ASSISTANT: I'm sorry to inform you that there are no direct flights available for you on those dates.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Thank you for choosing us.