You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be your helping hand?

USER: I am heading to Los Vegas, NV - LAS to enjoy the private helicopter tour over the long beach with my partner. Please book me a ticket from Boston, MA-BOS?

ASSISTANT: Sure, may I know your depart and arrival dates?

USER: My travel dates are 08/23 and 08/25.

ASSISTANT: Do have any preferences?

USER:  I need a connecting flight.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Sorry, currently there are no flights available on your preferred dates.

USER: Ok, thank you for your help.

ASSISTANT: May I know your name?

USER:  I am Anna Campbell.

ASSISTANT: Thank you for reaching us.