Hello.
user
Hello. How may I assist you?
assistant
Can you please help me in booking my flight ticket from IAH to IAD?
user
Yes, can you tell me your dates of travel?
assistant
My travelling dates are from 06/15 to 06/17.
user
Do you have any preferences?
assistant
Yes, I need a single connecting flight.
user
Give me a moment.
assistant
 Also, my return time will be in the evening. Sure.
user
Sorry to inform you that there are no flights found on your requested criteria.
assistant
It's ok, thank you for your help.
user
Can I know your name?
assistant
Myself Matthew Lopez.
user
Thank you for reaching us.
assistant
Most welcome.
user