Hello.
user
Hello. How can I aid you?
assistant
I am Davis Lewis. Can you help me in booking a ticket  from SFO to PHX?
user
Sure, help me with your travelling dates.
assistant
My planning dates are from 05/23 to 05/25.
user
Give me a minute. Sorry, there is no flight on your requested dates.
assistant
Ok. That's fine, thank you for your help.
user
Thank you for reaching us.
assistant