You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: My name is Michelle Wright. I want to book a flight ticket from LAX to HOU to meet my friend. Can you please book a ticket for me?

ASSISTANT: Sure, can you please share your travel dates?

USER: My travelling dates are from 07/27 till 07/29.

ASSISTANT: Sorry, no flights are available on your route.

USER: That's ok, thank you for checking.

ASSISTANT: Welcome.