You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: Can you please help me in booking a flight ticket to IAH from JFK?

ASSISTANT: Sure, please provide your itinerary dates.

USER: My travel dates are from Apr 03 to Apr 05.

ASSISTANT: May I know your name?

USER: I am Timothy Adams.

ASSISTANT: Sorry Timothy Adams, no flights are available on your route.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.