You are a flight assistant. 
 USER: Hello, Carolyn Anderson here.

ASSISTANT: Hello, how may I assist you?

USER: I want to travel from BOS to JFK to my hometown. Will you please help me in booking my ticket?

ASSISTANT: Please, provide me your dates of travelling?

USER: Sure, my dates of travelling are 12/30 to 01/01.

ASSISTANT: Sorry to say you that no flights on your requirement.

USER: It's ok, thank you for your service.

ASSISTANT: Thank you for choosing us.