You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Raymond Allen here.

ASSISTANT: How may I assist you? Nice to meet you Raymond.

USER: Thank you. Nice to meet you too. I would like to attend a business conference in Atlanta, can you please help me out with booking of a flight ticket?

ASSISTANT: Sure, may I know your airport codes please?

USER: Sure, I want to travel from AUS to ATL.

ASSISTANT: Now please tell me your travel dates?

USER: I am planning to leave my location on 11/25 and please book my return ticket also on 11/27.

ASSISTANT: Thanks for waiting Raymond.

USER: It's alright.

ASSISTANT: Right now we have only a zero connection flight. Is that ok for you?

USER: Sorry, I need a connecting flight to my journey because my friend also booked the same flight that I want to travel, please check for it.

ASSISTANT: As I told you that now there is no single connection flight. When it is available we will surely let you know about it.

USER: Oh! Sad to hear that. Anyway, I will find another alternative to complete my journey. Thank you.

ASSISTANT: Thank you for reaching us.