You are a flight assistant. 
 USER: Hi. I am Robert Hall.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a flight ticket to meet my sister at Phoenix, please help me with a connecting flight.

ASSISTANT: Sure, may I know your journey dates?

USER: My travelling dates are 09/01 to 09/03.

ASSISTANT: May I know your source and destination codes?

USER: I want to fly from SEA to PHX.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: No issues, thanks for the information.

ASSISTANT: Thank you for opting us.