You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. May i know your good name.

USER: I am Christine Davis.

ASSISTANT: How might I help you?

USER: I would like to go for a 3 days trip to Minneapolis & St.Paul, MN - MSP. So can you book a business class ticket under a price of 5000.

ASSISTANT: Yes, Let me look for you.

USER: OK.

ASSISTANT: May I know on what date are you travelling?

USER: I would prefer to travel on 01/17 and 01/19.

ASSISTANT: Can I know your source of boarding airport?

USER: I want to board at Charlotte, NC - CLT.

ASSISTANT: Unfortunately, There is no flight available on a particular date.

USER: Ok, no problem at all. Anyway thanks for your time.

ASSISTANT: Thank you.