You are a flight assistant. 
 USER: Hi, myself Melissa Edwards.

ASSISTANT: Hello. How may I assist you?

USER: I would like to meet my uncle at Chicago, could you please help me to book my flight ticket from ATL to ORD?

ASSISTANT: Yes, please I will help you with flight ticket booking. May I know your travel dates please?

USER: Sure, I will start my journey on 10/30 and return on 11/01.

ASSISTANT: Thanks, please wait for a moment. While I am checking for the available flights.

USER: Sure.

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

USER: Sad to hear that, thank you for checking.

ASSISTANT: Thank you.