You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Jessica Wilson here. I would like to visit Austin to meet my old friend there, can you please reserve a flight ticket from LAX to AUS?

ASSISTANT: Sure, can you please share your journey dates?

USER: Ok, I am planning to departure on July 26 and please book my return ticket also on July 28.

ASSISTANT: Do you have any specifications to be met?

USER: Yes, please search the return flight in the evening time.

ASSISTANT: Ok, please wait a moment.

USER: Sure, take your time.

ASSISTANT: Thank you for your time, sorry, no flights found on your requested time.

USER: Oh! Sad to hear that. Anyway, I will find another alternative to reach my destination. Thank you for the information.

ASSISTANT: Thank you for availing us.

USER: Welcome.