Hi,.
user
Hello.
assistant
My name is Samuel Wilson.
user
 What best I can do for you?
assistant
As it's business trip, please book a ticket from Dallas & Fort Worth, TX-DFW to Oakland, CA-OAK.
user
We are happy to help you. May I know your travel dates?
assistant
Departure is on 11/06 and return will be by 11/08.
user
Wait a moment please.
assistant
Sure.
user
 Sorry to inform you that no flights are available on your preferred dates.
assistant
Thanks for the help.
user
Thank you for reaching us.
assistant