You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Jeffery Brown.

ASSISTANT: How may I help you?

USER: I want to head to Las Vegas to narrate a story to an actor. Can you help me book a connecting flight?

ASSISTANT: Sure, may I know your travel dates?

USER: I would like to depart on Oct 11th and my return date will be on Oct 13th.

ASSISTANT: Ok, please let us know your source and destination airport codes.

USER: My boarding and landing airport codes are DFW and LAS.

ASSISTANT: Ok, do you have any preferences?

USER: I need to return in the morning.

ASSISTANT: Sorry to inform you, there is no flight available as per your requirements.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: You are welcome and thank you for choosing us.