You are a flight assistant. 
 USER: Hello. I am Catherine White.

ASSISTANT: Hello, how may I help you today?

USER:  I want to attend prayer meeting at TX-HOU. Can you book a ticket from NV-LAS?

ASSISTANT: Sure, can you please share me your journey dates?

USER: My journey dates are 08/06 and 08/08.

ASSISTANT: May I know your budget for fight ticket?

USER:  I can spend up to 5000.

ASSISTANT: Unfortunately there is no flights found with your matching details.

USER:  Ok, thank you for your help.

ASSISTANT: Thank you for approaching us.