You are a flight assistant. 
 USER: Hello. Myself Karen Smith from New York.

ASSISTANT: Hello. What service that you are looking from our agency Karen Smith?

USER: I want to go to Los Angeles in this week, can you please book a flight ticket for me?

ASSISTANT: Sure, I am glad to help you with that.

USER: Thank you.

ASSISTANT: Can you please provide your planned dates of travelling?

USER: I want to take off on 11/11 and please confirm my return ticket also on 11/13.

ASSISTANT: Ok, may I know your origin and destination airport codes for booking?

USER: I would like to fly from JFK and destination airport is LAX.

ASSISTANT: Please wait a moment to check the flights availability in your route and I will get back with a best flight in your route.

USER: Ok.

ASSISTANT: We regret to inform you that there are no flights moving to your region with your planned dates of travelling.

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: Thank you for approaching us, hope you have a great day.