You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I assist you today?

USER: Please book a ticket to Denver, CO-DEN from Charlotte, NC-CLT.

ASSISTANT: Sure, provide me with your journey dates?

USER: Departure date is 03/19 and 03/21 is return date.

ASSISTANT: Ok, do you need any halt?

USER: Connections limit is 1.

ASSISTANT: Ok, please wait a while.

USER: Sure.

ASSISTANT: Thank you for waiting, we did not find any flights on your required connections.

USER: I'm Cynthia Thomas. Thanks.

ASSISTANT: Thank you for serving you.