You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help you?

USER: Can you please make a flight reservation to Houston, TX - HOU from Las Vegas, NV - LAS?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Can you share me your travelling dates for booking purpose?

USER: My trip dates are from 06/26 to 06/28.

ASSISTANT: May I know your name?

USER: I am Michelle Johnson.

ASSISTANT: Ok, wait for some time.

USER: Sure.

ASSISTANT: Thanks for waiting there is no flights found on your details.

USER: Ok, thank you.

ASSISTANT: Thanks for choosing us.