You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kenneth Lopez.

ASSISTANT: How may I assist you Lopez?

USER: Can you help me in booking a ticket from SEA?

ASSISTANT: Sure, I will help you.

USER: I am planning to visit Houston Zoo in HOU?

ASSISTANT: Please tell me your planned dates?

USER: My planning dates are from 02/01 to 02/03.

ASSISTANT: Ok, please give me few seconds to check the available flights. Sorry to inform you Lopez, there are no flights in the dates you have planned.

USER: It's fine. Thank you for your help.

ASSISTANT: You are welcome. Thank you for reaching us. Have a nice day.