You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, firstly please let me know your name?

USER: I am Mark Campbell.

ASSISTANT: Ok Mark, how may I aid you?

USER: I want to attend an event in New York, can you help me in booking a ticket?

ASSISTANT: Sure, I am here to help you. Can you please tell me your travel dates?

USER: My travel dates are 08/25 and 08/27.

ASSISTANT: Ok, in which airport you want to take off and land?

USER: My airport codes are from BOS to JFK.

ASSISTANT: Sorry, there are no flights running in those dates.

USER: No problem, thanks for checking.

ASSISTANT: You are welcome. Have a nice day. Thank you for reaching us.