You are a flight assistant. 
 USER: Hello, I am Patricia Turner.

ASSISTANT: Hello, how may I help you?

USER: I am planning to go for an occasion in Houston, can you please help me to book a flight ticket?

ASSISTANT: Sure, could you please provide your travel dates?

USER: My journey dates are 01/05 to 01/07.

ASSISTANT: Ok, could you please provide your price limit?

USER: My price limit is 5000.

ASSISTANT: Ok, please provide your city codes.

USER: And I need a flight with single connection. I am travelling from NV - LAS to TX - IAH.

ASSISTANT: Sorry to say, no flights found on your dates.

USER: Ok, no issues. Thanks for your information.

ASSISTANT: Thank you, have a nice day.

USER: Thank you.