Hello.
user
Hello, how can I help you today?
assistant
Could you please book a flight ticket from Dallas & Fort Worth to Phoenix?
user
Sure, I will help you with that.
assistant
Thank you.
user
May I know your class preference?
assistant
I don't have class preference.
user
When are you willing to travel?
assistant
I am willing to start on 12 Feb and intend to return on 14 of Feb.
user
Are you flexible to depart and return any time?
assistant
Yes, I am flexible to travel at any time.
user
May I know your airport codes?
assistant
My airport codes are DFW to PHX.
user
Please share your name to proceed further.
assistant
Sure, my name is Jerry Moore.
user
Sorry to inform you that we didn't find any flight on given dates.
assistant
        That's fine, thank you for the response.
user
Thank you.
assistant