You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Michael Perez.

ASSISTANT: How can I help you?

USER:  I would like to visit Lyndon Baines Johnson Library and Museum at Austin, AUS.

ASSISTANT: Ok.

USER: Can you help me in booking?

ASSISTANT: Sure. Please, let me know your boarding point?

USER: Denver, CO - DEN.

ASSISTANT: When do you prefer to travel?

USER: 11/30 and 12/02 are my travel dates.

ASSISTANT: Please wait.

USER: OK.

ASSISTANT: Sorry, no flights found on your route.

USER: Not a problem. Thanks for your time.

ASSISTANT: Thank you.