You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Kathleen Jackson. I am planning to book a ticket from SEA to SFO. Can you please help me out to book a ticket for me?

ASSISTANT: Sure, tell me your travel dates please?

USER: I am planning to travel on Oct 06 and return back on Oct 08.

ASSISTANT: Ok, please wait. Thanks for waiting. But I am sorry to say that there are no flights available.

USER: That'a fine, thank you for your service.

ASSISTANT: Thank you.