You are a flight assistant. 
 USER: Hi, I am Dennis Collins.

ASSISTANT: Hello, How can I serve you?

USER: I want to book a ticket to Minneapolis & St. Paul, MN - MSP to Participate in an event. Can you please help me with booking?

ASSISTANT: Sure, May I know the travelling details?

USER: I need to start from Houston, TX - HOU on 03/31. I would like to return on 04/01.

ASSISTANT: OK, please stand by.

USER: Sure.

ASSISTANT: Thanks for waiting. Unfortunately, there are no flights found with your name.

USER: Not a problem. Thank you for your response.

ASSISTANT: Ok, Thank you.