You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Ashley Campbell here.

ASSISTANT: Ashley Campbell, how may I aid you?

USER: I would like to book a ticket from AUS to LAS, can you please help me with that?

ASSISTANT: Sure, please provide your itinerary dates.

USER: The travel dates are from 10/05 to 10/07.

ASSISTANT: Do you have any specifications?

USER: I would like to depart during evening time. I would like to return during afternoon time.

ASSISTANT: Do you have any other preferences?

USER: I need a flight with 1 connection limit.

ASSISTANT: Please wait for a while. Let me check for a best flight on your route.

USER: Ok.

ASSISTANT: Sorry, no flights are available in the evening.

USER: That's ok, thank you for your help.

ASSISTANT: Thank you for choosing us.