Hi.
user
Hello, how may I help you?
assistant
I am Laura Smith, could you please help me with booking ticket from IAH to DCA?
user
Sure, can you please specify me your dates of travel?
assistant
Ok, my planned dates are from Nov 17 to 19.
user
Do you have any particular time for departing and returning?
assistant
Yes, I want to departure in the evening time with single connection.
user
May I know your other specifications?
assistant
 No, I did not have any other requirements.
user
Sorry, no flight is available for you.
assistant
It's ok, thanks for your information.
user
Thank you for reaching us.
assistant