You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am Amy Smith. I want to book a ticket, can you help me out?

ASSISTANT: Yes,smith could you provide me your source and destination details?

USER: I want to go from NY-JFK to MA-BOS.

ASSISTANT: OK, may I know your travelling dates?

USER: My travelling dates are 08/26 to 08/28.

ASSISTANT: Sorry, smith no flight found for this search.

USER: It's OK no problem. Thank you.