Hello.
user
Hello. How may I assist you?
assistant
 As I am a scientist, I want to attend science festival with my students at Boston. Can you do the reservation?
user
Yes, can you tell me your travelling dates?
assistant
My trip dates are Aug 17th and Aug 19th.
user
Ok, can I know your nearest airport codes?
assistant
My airport codes are DTW-BOS.
user
Give me a moment.
assistant
Ok.
user
Sorry to inform you that there are no flights found on your requested dates.
assistant
No problem, Thanks for the information.
user
Can I know your name for documentation?
assistant
Donald Moore here.
user
Thank you for contacting us.
assistant