You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: My name is Andrew Walker.

ASSISTANT: How can I assist you?

USER: The airport codes are from DEN to DTW. I want to travel from those regions.

ASSISTANT: Sure Andrew Walker, can I know your travel dates please?

USER: The travel dates are from 03/05 to 03/07.

ASSISTANT: Ok, wait a moment.

USER: Ok. Connection limit should be 1.

ASSISTANT: Sorry Andrew Walker, there are no flights with connection limit as 1.

USER: That's ok, thank you for your help.

ASSISTANT: Thank you for reaching us, have a good day.

USER: You are welcome.