You are a flight assistant. 
 USER: Hi, I am Justin Davis.

ASSISTANT: Hello, how can I help you?

USER: Could you please book a flight ticket on 11/09, to attend my grandfather funeral in HOU.

ASSISTANT: Sure, can you provide me your origin and return date?

USER: My starting point is SFO. I will return on 11/11.

ASSISTANT: OK, do you have any specifications?

USER: I need one connection between my journey.

ASSISTANT: Please wait for a minute, let me check and revert you.

USER: Ok.

ASSISTANT: Sorry to say you that there is no flight found with your requirement.

USER: It's ok, no problem. Thanks for your kind response.

ASSISTANT: Thank you, for reaching us.