You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Nicholas Brown here. Do you have any flight from JFK to IAH?

ASSISTANT: Yes, let me know your dates of travel.

USER: My travelling dates are 05/06 and 05/08.

ASSISTANT: There is no flight available with your trip dates.

USER: That's fine, thanks for your help.

ASSISTANT: Welcome Nicholas Brown.