You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am planning to visit JFK, so please help me to search a flight ticket from SFO.

ASSISTANT: Sure, may I know your name?

USER: My name is Kimberly Smith.

ASSISTANT: Ok, can you provide me your travelling dates?

USER: My travelling dates are 09/25 and 09/27.

ASSISTANT: Sorry, no flight's found on your details.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for contacting us.