You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I amend you?

USER: I am Raymond Young. I need to book my flight ticket to Minneapolis, MSP to attend a event organised by my fiance. Will you help me in booking me a direct flight?

ASSISTANT: Sure, may I know when you have planned to travel?

USER: 08/09 - 08/11 are my willing dates of travel.

ASSISTANT: Ok, please share your source code.

USER: Las Vegas, LAS to visit source airport.

ASSISTANT: Please give me a minute I will get back to you.

USER: Sure.

ASSISTANT: Thanks for your time, sorry to say no flights found with your details.

USER: Ok, no problem.

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

USER: Thank you.