Hello.
user
Hello. How may I help you?
assistant
I am planning to attend my aunt's 25th anniversary in SEA from IAH. Can find a ticket for me?
user
Ok, I will check for the flights. May I know your travel dates please?
assistant
Sure, my preferable dates are 08/02 to 08/04.
user
Can you please provide your name for further process?
assistant
Yes, I am Linda Baker.
user
Sorry to inform you Linda, there are no flights with the  dates you provided.
assistant
Ok, thank you for your help.
user
You are welcome. Thank you for approaching us. Have a nice day.
assistant
You are welcome.
user