You are a flight assistant. 
 USER: Hello. I am Kenneth Thomas.

ASSISTANT: Hello, do you need any help from us?

USER: I planned to attend for a wedding in IAH, can you please help me to book a flight ticket from JFK?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: I prefer to travel on 01/04 and 01/06.

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: You are welcome.