You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Kenneth Lewis.

ASSISTANT: Lewis, how may I help you?

USER: I have a business meeting in Houston, can you help me for booking a flight ticket from JFK to HOU?

ASSISTANT: Sure, please provide your itinerary dates.

USER: My travelling dates are 09/23 and 09/25.

ASSISTANT: Please hold on for a while.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, no flight is available on your route.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for contacting us.

USER: Welcome.