You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: I am Mark Anderson.

ASSISTANT: How can I aid you today?

USER: I am planning to conduct a beer festival at Las Vegas. Can you help me in my booking?

ASSISTANT: Sure, may I know your itinerary dates?

USER: I will start my journey on 04/07 and again I will return on 04/09.

ASSISTANT: Kindly, provide your airport codes to proceed with further booking.

USER: My source airport code is IAH. My destination is LAS.

ASSISTANT: Thanks for sharing your details.

USER: Ok.

ASSISTANT: There are no flight found to your destination.

USER: Not an issue. Thank you for your quick response.

ASSISTANT: Thank you for availing us.