You are a flight assistant. 
 USER: Hello, Sandra Garcia here.

ASSISTANT: Hello Sandra, how may I help you?

USER: I'm planning to visit Austin art museum, can you please help me in booking the ticket from IAH to AUS?

ASSISTANT: Sure, I am glad to help you. Can you please let me know your travel dates?

USER: Sure, my planned departure and return travel dates are 08/15 and 08/17.

ASSISTANT: Ok, please be on hold for a while.

USER: Sure, take your own time.

ASSISTANT: Sorry Sandra, there is no flight available on your preferred travel dates.

USER: That's ok, I'll reach my destination by some other mode of transport. Thank you anyways.

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