Hi.
user
Hello, how may I help you today?
assistant
I am  Patrick Rodriguez. I want to book a flight ticket on dates 03/27 and 03/29, can you help me with booking please?
user
Sure, may I know your airport codes?
assistant
My airport codes are SEA and DCA.
user
Do you have any specifications?
assistant
I would like depart in the evening.
user
Sorry, there are no flights found on your specified routes.
assistant
That's ok, thank you for the response.
user
Thank you for contacting us.
assistant