You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: I am planning to meet my family friend on his birthday at Detroit.

ASSISTANT: Ok.

USER: Can you help me with booking under a fare 1000?

ASSISTANT: Sure. May I know your travelling dates?

USER: I would like to fly on 05/11 and return on 05/13.

ASSISTANT: Can you share me your source and destination codes?

USER: My journey point starts from GA-ATL to MI-DTW.

ASSISTANT: May I know your good name?

USER: I am Sarah Williams.

ASSISTANT: There is a flight 1007 in Frontier airline and price 100 with a connection.

USER: Please book my ticket.

ASSISTANT: Your ticket is done.

USER: Thank you.

ASSISTANT: Thank you.