You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: I am Andrew Allen want to travel to MA-BOS to attend a family party. Can you book  a ticket from NY-LGA?

ASSISTANT: Sure, Please help me with your travel dates.

USER:  My travel dates are 04/12 and 04/14.

ASSISTANT: May I know your name?

USER: I have already provided.

ASSISTANT: Sorry, Please wait a moment.

USER: Ok, no problem.

ASSISTANT: No flights available on your particular dates of journey.

USER:  Thank you for your help.

ASSISTANT: Thank you for availing us.