You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I serve you?

USER: Can you please help me with booking a flight ticket to Boston with price under 500?

ASSISTANT: Sure, May I know the journey codes?

USER: Journey codes are MSP-BOS.

ASSISTANT: Please help me with your travel dates.

USER: My travel dates are 07/04 and 07/06.

ASSISTANT: Please wait a minute.

USER: oK.

ASSISTANT: May I know your name?

USER: My name is Sandra Gonzalez.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, no issues. Thanks for the help.