You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Michelle Edwards.

ASSISTANT: How can I help you today?

USER: I am planning to visit Dallas World Aquarium at Dallas and Fort Worth, could you please help me with booking a flight ticket from LAS to DFW?

ASSISTANT: Sure, I am here to help you. May I know your travelling days?

USER: I would like to take off on 06/24 and return on 06/26.

ASSISTANT: Just give a moment.

USER: Sure, take your time.

ASSISTANT: Sorry to say this, there is no flights available on your desired route.

USER: That's ok, I will find an another alternate way to complete my trip. Anyways, thank you for the information.

ASSISTANT: Thank you for reaching us.