You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Samantha Perez here, I would like to travel from BOS to JFK.

ASSISTANT: Ok.

USER: Can you help me for booking?

ASSISTANT: May I know the dates of travelling?

USER: My trip dates are 08/26 and 08/28.

ASSISTANT: Sorry, there is no flight found.

USER: No problem.

ASSISTANT: Thank you.

USER: Thank you for checking.