You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Reserve me a plane ticket to Chicago, ORD as I want to open a new restaurant.

ASSISTANT: Ok, may I know your travel dates?

USER: My travel dates are 05/09 and 05/11.

ASSISTANT: Help me with your source point?

USER: Detroit, DTW is my boarding airport code.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT:  sorry, no flights are working on your requested dates.

USER: It's ok, not an issue.

ASSISTANT:  May I know your name?

USER: I am Ruth Mitchell. Thank you for your response.

ASSISTANT: Thank you for opting us.