You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, please tell me your name first?

USER: Yes, I am Christopher Miller.

ASSISTANT: Ok, what can I do for you?

USER: Me and my friend's are planning to to go to Exhibition in MSP from LAS. Can you find a ticket for me?

ASSISTANT: Sure, I am happy to help you. Please provide me your trip dates?

USER: Sure, my travelling dates are 06/04 to 06/06.

ASSISTANT: Sorry for the inconvenience, there are no flights available for you planned dates.

USER: Ok, thank you for your help.

ASSISTANT: You are welcome. Thank you for contacting us.