You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Thomas Young. I want to book a flight ticket from EWR to HOU. Could you help me in booking?

ASSISTANT: Sure, please provide your trip dates.

USER: My travelling dates are from May 08-10.

ASSISTANT: Sorry, on these dates there is no flights available.

USER: That's ok, no problem. Thank you.

ASSISTANT: Most welcome.