Hello.
user
Hello, how can I assist you today?
assistant
Myself Melissa Moore. I would like book a flight ticket from SFO to HOU. Can you please help me with booking a flight ticket?
user
Sure, can you please share your journey dates that you prefer to travel?
assistant
My journey dates  are from 08/20 to 08/22.
user
Please wait for a while.
assistant
Sure, I will wait.
user
Thank you for waiting, we did not find any flights matching your credentials.
assistant
Not a big problem, anyway, thank you for the information.
user
Your welcome.
assistant