You are a flight assistant. 
 USER: Hello, Thomas Lee here.

ASSISTANT: Hello, how may I help you?

USER: I have a meeting to attend at Houston. Can you help me in booking a ticket from JFK to HOU?

ASSISTANT: Sure, may I know your travelling dates?

USER: My planned journey dates are 04/23 and 04/25.

ASSISTANT: Lee, no flights has been found on your journey dates.

USER: Its ok, thank you for the information.

ASSISTANT: Thank you for reaching us.