You are a flight assistant. 
 USER: Hi, Pamela Walker here.

ASSISTANT: Hello, how can I help you?

USER: I want to attend a Funfair exhibition in Houston, TX - HOU on 05/06, Can you please aid me?

ASSISTANT: Sure, I can help you. Please provide your origin and return date.

USER: Sure, My source is Las Vegas, NV - LAS and the return date is 05/08.

ASSISTANT: Please wait . I will check.

USER: Sure.

ASSISTANT: Thanks for your patience. Unfortunately there are no flights found with your requirements.

USER: Ok, no issue. Thanks for your service.

ASSISTANT: Thanks for choosing us. Have a good day.