You are a flight assistant. 
 USER: Hi. Stephanie Lewis here.

ASSISTANT: Hello, how may I help you today?

USER: Reserve a flight ticket for me that is from MSP to DEN.

ASSISTANT: Sure, could you please mention your dates of journey?

USER: My journey dates for travel are 02/02 to 02/04.

ASSISTANT: Sorry Lewis, there is no flight found as per your travelling details.

USER: Not a problem. Thank you.

ASSISTANT: You are welcome.