You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Michelle Johnson.

ASSISTANT: How can I assist you?

USER: I am looking for a flight from DTW to OAK, can you help me?

ASSISTANT: May I know your travel dates?

USER: My travelling dates are 31 Mar and 02 Apr.

ASSISTANT: Are there any airline preferences?

USER: No.

ASSISTANT: Is there any time concern?

USER: I would like to return in the evening.

ASSISTANT: Let me know your connection limit?

USER: I need a direct flight.

ASSISTANT: Are there any other concerns?

USER: No.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Sorry to inform that there is no reservation by your name.

USER: It's ok, not a problem, thank you.

ASSISTANT: Thank you for reaching us.