You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Gregory Evans here.

ASSISTANT: How can I help you?

USER: I want to travel from DFW to AUS for my business meeting, can you please check is there any flight available on those locations?

ASSISTANT: Let me know your travel dates.

USER: Sure, I am planning to move on Mar 27 and please book my return ticket also on Mar 29.

ASSISTANT: Do you have any preference?

USER: Yes, I would like to departure at the time of evening.

ASSISTANT: Sorry, no flights found for your travelling dates.

USER: Oh! Sad to hear that. Anyway, thank you for the information.

ASSISTANT: Thank you.