You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Thomas Moore here.

ASSISTANT: How may I guide you?

USER: I am looking for a direct flight from AUS to LAS, can you help me?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: Sure, my preferable trip dates are from 05/01 to 05/03.

ASSISTANT: Please wait a moment, Thomas.

USER: Sure.

ASSISTANT: Thomas, no flights has been found on your requirement.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for choosing our service.