Hello. I am Charles Robinson.
user
Hello, how may I guide you? Sure, can I know your preferable dates?
assistant
Can you please book a flight ticket from PHL to JFK? I prefer to travel on 07/11 and 07/13.
user
 I found a flight 1019 of Delta airlines matches with your preferences, can I proceed?
assistant
Ok, book it.
user
Thank you.
assistant
Thank you.
user