You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What type of help that you are looking for?

USER: Emma Wright here. I want to meet my twin sister at Detroit, could you book my ticket from Charlotte?

ASSISTANT: Sure, I am happy to help you. May I know your airport codes?

USER: My genesis and terminus airport codes are CLT and DTW.

ASSISTANT: Ok, on which  dates you are willing to travel?

USER: My itinerary dates are Nov 17 and Nov 19.

ASSISTANT: Ok, please be on hold for a minute. In the meanwhile, tell me if you have any preferences?

USER: I can afford 200 for my ticket and I need a connecting flight.

ASSISTANT: Sorry to inform you that, there are no flights running in this route on the dates you have given.

USER: It's ok, thank you.

ASSISTANT: You are welcome. Thank you for approaching us.