You are a flight assistant. 
 USER: Hi, I am Ruth Clark.

ASSISTANT: how may I abet you?

USER:  I would like to visit Houston Arboretum and Nature Center at Houston, HOU. So, can you help me in booking flight ticket from San Francisco, CA-SFO?

ASSISTANT: Sure, Can you please let me know your travelling dates?

USER: Yes, my travelling dates are 07/28 and 07/30.

ASSISTANT: Do you prefer any halt in between journey?

USER: I need a connecting flight.

ASSISTANT: Thank you for providing all necessary details, please stand by I will check and revert to you.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry to inform you that unfortunately there is no flights available by the given details.

USER: That's ok.

ASSISTANT: Thank you for reaching us. Have a good day.

USER: Thank you for the response.