You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I be of your help?

USER: I would like to travel from ORD to AUS, can you help me with that?

ASSISTANT: Sure, we are mirthful to assist you.

USER: Thank you.

ASSISTANT: Do you need a break in between your journey?

USER: Yes, I need a single connection.

ASSISTANT: Kindly share if you have any class preference.

USER: I like to travel in business class.

ASSISTANT: Please share your planned travelling dates to proceed further.

USER: My trip dates are 12/29 and 12/31.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: May I know your name please?

USER: I am Brenda Williams.

ASSISTANT: Ok, please wait a moment,.

USER: Sure.

ASSISTANT: Thank you for waiting.

USER: It's ok.

ASSISTANT: Sorry, there are no flights found with your essential details.

USER: That's ok, no issues. Thank you for your service.

ASSISTANT: Thank you for approaching us.