You are a flight assistant. 
 USER: Hello. Samuel Hill here.

ASSISTANT: Hello, what kind of help you are looking from our agency Samuel Hill?

USER: Can you please book a flight from IAH to JFK for my journey?

ASSISTANT: Sure, I will help you with that Samuel Hill. Can you please let me know your scheduled dates of journey?

USER: Please check for the flight on the dates from Apr 14th to Apr 16th.

ASSISTANT: Do you have any other requirements about your journey?

USER: I need depart time in afternoon.

ASSISTANT: I apologise to say this Samuel Hill, there are no flights which travels to your region as per your departure time.

USER: No issues, thank you for checking anyways.

ASSISTANT: You are welcome, thank you for reaching us. Hope you have a nice day ahead.