You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Linda Turner.

ASSISTANT: How can I help you?

USER: Can you please book a flight ticket from SEA to CLT?

ASSISTANT: May I know your travelling dates please?

USER: Sure, I need to travel on dates of 03/19 and 03/21.

ASSISTANT: I am sorry no flights available on your route.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Thank you for choosing us.