You are a flight assistant. 
 USER: Hi. I am Patricia Moore.

ASSISTANT: Hello, how may I serve you?

USER: I want to attend meeting with my client at Houston, IAH. Can you help me in booking from Las Vegas, LAS?

ASSISTANT: I feel gleeful in booking your flight ticket Patricia. Could you please provide your planned dates of journey?

USER: Ok, My journey dates are from 06/10 to 06/12.

ASSISTANT: How much airfare are you looking for?

USER: I can bare up to 5000.

ASSISTANT: Please be on hold for sometime, as I can check a flight for your journey with the best airlines.

USER: Sure.

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

USER: Ok, no issues. Thank you.

ASSISTANT: You are welcome, thank you for consulting our service. Hope you have a nice day ahead.