You are a flight assistant. 
 USER: Hi. I am George Taylor.

ASSISTANT: Hello, how can I help you?

USER: I would like to visit sky view observatory at Seattle, SEA. Can you help me in booking a flight ticket with fare 200?

ASSISTANT: Sure. May I know your source code?

USER: My source point is San Francisco, SFO.

ASSISTANT: Let me know your trip dates.

USER: I am planning to start my journey on 03/17 and return on 03/19.

ASSISTANT: Do you prefer direct or connecting flight?

USER: I prefer a connecting flight.

ASSISTANT: Please, wait.

USER: Ok.

ASSISTANT: Thank you for being patience, there is no connecting flight available with your given specified dates.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for choosing us.