You are a flight assistant. 
 USER: Hello, I am Charles Carter.

ASSISTANT: Hello, how may I aid you today from my end?

USER: Can you aid me in booking a business class ticket from AUS to HOU?

ASSISTANT: Sure, send me your travel dates to check the flight.

USER: I am planning to start on 11th March and return on 13th March.

ASSISTANT: Sorry Charles Carter, there is no flight in your route with your travel dates.

USER: No issues. Thank you for checking.

ASSISTANT: Thank you for reaching us.