You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Thomas Carter.

ASSISTANT: How may I aid you?

USER: I am planning to visit Museum of Nature and Science at Denver, could you please help me with booking a flight ticket from LAX to DEN?

ASSISTANT: Sure, I am here to help you. Can you please share your travelling dates to proceed further?

USER: I would like to take off on 07/01 and return on 07/03.

ASSISTANT: Sorry, there are no flights available for you in this route as per your travelling details.

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.