You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I would like you to make my flight reservation from DFW to IAH, can you please help me?

ASSISTANT: Sure, please provide your journey dates.

USER: I would like to depart on June 14th and return back on June 16th.

ASSISTANT: Ok, May I know your connection limit?

USER: I need a flight having single connection.

ASSISTANT: Ok, Is there any other preferences?

USER: I prefer for a business class.

ASSISTANT: Ok, please provide your name.

USER: My name is Elizabeth Lee.

ASSISTANT: Thank you for providing details, we did not find any flights with your given requirements.

USER: Oh! Not an issue. Anyway, thank you for checking.

ASSISTANT: Thank you for opting us.