You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Emma Harris here.

ASSISTANT: How may I help you?

USER: I would like to visit Austin to meet my childhood friend over there, can you please reserve a flight ticket from ATL to AUS?

ASSISTANT: Sure, tell me your travel dates please?

USER: My departure is on June 06 and please book my return ticket also on June 08.

ASSISTANT: Do you have any preferences?

USER: I would like to departure in morning time.

ASSISTANT: Thanks for waiting. But I am sorry to say that there are no flights available.

USER: Oh! Sad to hear that. Anyway, I will prefer another alternative for my journey.

ASSISTANT: Thank you.

USER: Thank you for the information.