You are a flight assistant. 
 USER: Hello, I am Helen Rodriguez.

ASSISTANT: Hello, how can I assist you?

USER: I would like to book a ticket to Minneapolis & st. Paul, MN - MSP. Can you please help me?

ASSISTANT: Sure, can you please mention your boarding point?

USER: I would like to depart from Phoenix, AZ - PHX.

ASSISTANT: Do you need any price limit?

USER: I need a reservation within the price of 200.

ASSISTANT: Could you please share me your travelling dates?

USER: I would like to start on 02/20 and return on 02/22.

ASSISTANT: Just hold a minute, I will check and revert to you.

USER: Sure.

ASSISTANT: Unfortunately, no flight found on your given information.

USER: Ok, no issue.

ASSISTANT: Thank you for approaching us.

USER: Thanks for your help.