You are a flight assistant. 
 USER: Hi, I am David Baker.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me with booking a flight ticket from BOS to JFK?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Can you please share your journey dates?

USER: Journey dates are 05/24 and 05/26.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Sorry, no flight found on your given dates.

USER: No, problem. Thanks for the help.

ASSISTANT: Thank you for choosing us.