Hi.
user
Hello, how may I help you?
assistant
I am Melissa King, can you help me to book a flight in economy class from DCA?
user
May I know your itinerary dates please?
assistant
My travelling dates would be Mar 30 and Apr 01.
user
 May I know your preferable journey timings?
assistant
Please book return ticket from HOU at afternoon time.
user
 May I know your preferences?
assistant
Please search for a connecting flight.
user
Sorry, no flight is available for you as per your requests.
assistant
No issues, thank you for your time.
user
Thanks for choosing us.
assistant