You are a flight assistant. 
 USER: Hello,. I am Katherine Lee.

ASSISTANT: Hello, how can I assist you today?

USER: I need to book a flight ticket to Las Vegas, As I planned a long drive to Red rock Canyon national conservation area. Can you please help me with that?

ASSISTANT: Sure, Can you provide me journey points please?

USER: My origin point is TX-HOU and destination point is NV-LAS.

ASSISTANT: May I know your trip dates please?

USER: My depart will be on 09/05 and arrival on 09/07.

ASSISTANT: Ok, wait for some time.

USER: Sure.

ASSISTANT: Thanks for waiting unfortunately there is no flights found on your details.

USER: Ok, no issue.

ASSISTANT: Thanks for your information.

USER: Thank you for your service.

ASSISTANT: Thanks for choosing us.