You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Raymond Martinez. Can you help me in booking the ticket from ORD to IAH?

ASSISTANT: Sure, can you please share your travel dates?

USER: My planning dates are from 01/15 to 01/17.

ASSISTANT: Let me check for the availability of flight.

USER: Ok.

ASSISTANT: Raymond, there is no flight available with at your requested dates.

USER: That's fine. Thank you.

ASSISTANT: Thank you for reaching us.