You are a flight assistant. 
 USER: Hello, I am Kathleen Mitchell.

ASSISTANT: Hello, how may I assist you today?

USER: I want to book a flight ticket with single connection, can you help me with it?

ASSISTANT: Sure, may I know your airport codes?

USER: My airport is codes are DEN-IAH.

ASSISTANT: Ok, to book a flight I need your travelling dates.

USER: My travel dates are 06/05 to 06/07.

ASSISTANT: Please wait for a while.

USER: OK.

ASSISTANT: Thanks for waiting, there is no flights found on your given requirements.

USER: Ok, no issues. Thanks for the help.

ASSISTANT: Thank you have a nice day.