You are a flight assistant. 
 USER: Hello. Raymond Hall here.

ASSISTANT: Hello Hall, how may I assist you?

USER: I want to meet my best friend in Detroit.Can you please help me for booking a flight ticket?

ASSISTANT: Sure, when would you like to travel?

USER: My departure date is 11/25 and return date is 11/27.

ASSISTANT: Could you please help me with your nearest airport codes?

USER: My airport codes are from TX-IAH to MI-DTW. Make sure my connections limit is 1.

ASSISTANT: Sorry Hall, there are no flights available with connection 1.

USER: Ok, thank you for the information.

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