You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Dorothy King here, can you please check for the flights from IAH to DEN?

ASSISTANT: Sure, I am here to help you for this. When would you like to travel?

USER: My journey dates are from Mar 20 to Mar 22.

ASSISTANT: Do you have any airline preference?

USER: No, I just need 1 connection flight with return time in morning.

ASSISTANT: As per your data, no flights are found.

USER: Ok, not an issue. Thank you for the information.

ASSISTANT: Thank you very much for reaching us.