Hello.
user
Hello, How can I help you?
assistant
Can you help me to book a flight ticket from DCA to IAH?
user
Sure, May I know the travelling dates?
assistant
My travelling dates are 29 Sep and return on 01 Oct.
user
Do you have any connection limit?
assistant
I want a direct flight.
user
Is there any other requirements?
assistant
I prefer to depart in the evening.
user
May I know your name?
assistant
I am William Martin.
user
Please wait a minute.
assistant
Sure.
user
Sorry, No flights found with your preferable dates.
assistant
Oh! that very sad to hear, thank you.
user
Thank you for availing us.
assistant