You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Janet Harris, I want to book a flight on 07/20 and return on 07/24.

ASSISTANT: Sure, do you have any price limit?

USER: I need a flight under fare of 200.

ASSISTANT: Help me with your airport codes?

USER: I will fly from MN-MSP to CA-LAX.

ASSISTANT: Please be on hold.

USER: Sure.

ASSISTANT: Thank you for your time, we found that no flights were running at that locations.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us.