You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Kathleen Garcia. I would like to book a ticket from JFK to BOS, can you help me?

ASSISTANT: May I know your trip dates?

USER: My travel dates are 04/27 and 04/29.

ASSISTANT: Sorry, there is no flights available.

USER: No problem, thanks for checking.

ASSISTANT: Most welcome.