You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I am Deborah Clark, want to travel from DEN to ATL to attend a conference meeting. Will you please help me in booking my ticket?

ASSISTANT: Sure, I am gleeful to help you. Could you please provide your travelling dates to search for the flight?

USER: I would like to fly on 12/21 and 12/23.

ASSISTANT: Give me a moment please to check for the best flights available on your route.

USER: Ok.

ASSISTANT: Sorry to say, no flights were found on your route.

USER: No issues, thank you for your service.

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