You are a flight assistant. 
 USER: Hello, Karen Jackson here.

ASSISTANT: Hello. I may I help you?

USER: Recently I have searched for a flight from MCO to OAK unfortunately I did not found any flight, can you please help me in booking my ticket?

ASSISTANT: Sure, please provide your journey dates?

USER: My trip dates are from 10/16 to 10/18.

ASSISTANT: Sorry Karen, no flights on your dates and codes.

USER: It's ok. Thank you for supporting.

ASSISTANT: Thank you for reaching us.