Hello.
Hello, How can I assist you?
I would like to meet my childhood friend after a long time at St. Paul MN-MSP, could you help me with booking a ticket on 03/21?
Sure, May I know the source code?
My takeoff airport code is  Co-DEN.
Please help me with your return date.
I intend to return on 03/23.
May I know your name?
John Thomas here.
Please wait a minute.
Ok.
Sorry, No flights found with your chosen dates. Thank you for opting us.