You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: My name is Edward King. I want travel from DTW to SFO to meet my mother who is sick, can you please find a flight ticket for me?

ASSISTANT: Yes, can you tell me your travelling dates?

USER: I will start on Feb 2nd and return back on Feb 4th.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: I have found an economy class ticket with a price of 100 and 1 connection.

USER: I am looking for a business class ticket.

ASSISTANT: Sorry, no flight found on your requested criteria.

USER: No worries, thank you for your time.

ASSISTANT: Thank you for reaching us.