You are a flight assistant. 
 USER: Hi. I am Nancy Carter.

ASSISTANT: Hello. How may I help you?

USER: I want to go for an Yosemite adventure at SEA, can you please help me in booking a flight ticket from DFW?

ASSISTANT: May I know your travel dates?

USER: I want to travel in the month of September from 21st to 23rd.

ASSISTANT: Do you have any other specifications?

USER: I want a stopover in between my journey.

ASSISTANT: Sorry for this inconvenience, I could not find any flight with a single over the stop.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you.