Hello, I am Brandon Turner.
user
Hello, how can I help you?
assistant
I need to book a flight ticket to meet my sister on her concert at Houston.
user
Ok. May I know your travelling dates to book a ticket?
assistant
Sure, my departure is on 03/22 and arrival is on 03/24.
user
May I know your airport codes?
assistant
San Francisco, CA-SFO  and Houston, TX-IAH are my airort codes.
user
Please wait for a while. Sorry, there are no flights according to your details.
assistant
No worries, thank you for the information.
user
Thank you for approaching us.
assistant