You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: This is Melissa Gonzalez.

ASSISTANT: How may I lend a hand to?

USER: I want to book a flight ticket from DTW to MSP. Can you help me in that?

ASSISTANT: Melissa Gonzalez, I am willing to help you for this. When would you like to travel?

USER: Thank you. My travel dates are Apr 16 to Apr 18.

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: Melissa Gonzalez sorry to intimate, no flights are available with your criteria.

USER: Ok, not an issue.

ASSISTANT: Thank you Melissa Gonzalez for utilizing our agency.

USER: Thank you for your service.