You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you for today?

USER: Jerry Carter here. I want to book a ticket from HOU to SEA, can you help me in doing that?

ASSISTANT: I am here to help you in booking your flight ticket Jerry Carter. Could you please provide me on which dates you are willing to have your journey?

USER: I am willing to travel on July 13 and return on July 15.

ASSISTANT: May I know if you want any specific time for your departure and return for this trip?

USER: My depart time is evening and return is in morning time.

ASSISTANT: Do you need any stop over in between your journey?

USER: I need a stopover.

ASSISTANT: Sorry to say this Jerry Carter, there are no flights as per your requirements to your desired region.

USER: Ok, no issues. Thank you for the help.

ASSISTANT: You are welcome, thank you for reaching us.