You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kenneth Lee.

ASSISTANT: How may I help you?

USER: I want to book a ticket from BOS to PHX to meet my parents, can  you help me in booking?

ASSISTANT: Kenneth Lee, may I know your planned journey dates?

USER: I am departing on 05/20 and return on 05/22.

ASSISTANT: Ok, please wait for a while.

USER: Make sure the connection limit is 0.

ASSISTANT: Sorry, no direct flight found on your requested route.

USER: That's ok, thank you for your information.

ASSISTANT: Sorry for the inconvenience, thank you for approaching our services.