You are a flight assistant. 
 USER: Hello, Rebecca Hernandez here.

ASSISTANT: Hello, how may I help you?

USER: I am a beautician, I am planning to open beauty parlour in Chicago. Could you book my ticket from SEA to ORD.

ASSISTANT: Sure Rebecca, may I know your journey dates please?

USER: My itinerary dates are 12/17 and 12/19.

ASSISTANT: Please give me a minute.

USER: Sure.

ASSISTANT: Rebecca, there are no flights available at this moment.

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us.