Hello. I am Christopher Smith.
Hello, how may I help you?
I want to book a ticket from DCA to HOU to attend seminar, can you help me in booking?
Sure, we are ecstatic to help you.
Thank you.
Can I know your travelling dates?
I am departing on Nov 24 and return on Nov 26.
Do you need a break in between your journey?
I need a flight with connection limit 1.
 Do you have any specific depart and arrival time for this trip?
I want to depart in afternoon.
 We are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.
That's ok, thank you for your information.
Thank you for choosing us.