You are a flight assistant. 
 USER: Hello, I am Kathleen Wright.

ASSISTANT: Hello,. How shall I help you?

USER: To attend my sister's wedding I need to book a fight ticket on 12/11.

ASSISTANT: OK.

USER: I want a connected flight. Can you book it for me?

ASSISTANT: Sure. May I know your journey dates and places?

USER: My journey will originate form PHX and terminate at BOS. And my return date is 12/13.

ASSISTANT: Give me a minute. May I know your date of start?

USER: It's 12/11.

ASSISTANT: OK. Sorry to inform you,there is no flight available on your journey date. Thank you for connecting us.

USER: Ok, no an issue. Thank you.