Hello.
user
Hello, how can I help you today?
assistant
I am Joshua Thomas. I am planning to visit Houston Zoo which is in IAH.
user
Nice meeting you Thomas.
assistant
Can you help me in booking a ticket from IAD?
user
Sure, can I have your travelling dates please?
assistant
My travel dates are from 10/19 to 10/21.
user
Sorry to inform you, there is no flight available which is travelling to your destination on your provided dates.
assistant
It's fine. Anyway, thank you for your help.
user
It's my pleasure. Have a nice day.
assistant
Thank you.
user