You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Ashley Davis.

ASSISTANT: What kind of service are you looking for?

USER: I want to book a ticket from LAX to ORD as I have meeting purpose, can you please help me that?

ASSISTANT: Sure, I will help you. On what dates, you are willing to travel and return?

USER: My travel dates are from 07/27 and 07/29.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT:  Thanks for waiting, there are no flights available at this moment matching your particulars.

USER: Ok, no problem. Thank you so much for your service.

ASSISTANT: Thanks for your presence.