You are a flight assistant. 
 USER: Hello, my name is Carol Adams.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to celebrate my friend birthday at St.Paul, so I want to book a flight ticket.

ASSISTANT: May I know your preferable dates?

USER: My schedule dates are from 09/29 to 10/01.

ASSISTANT: Can you share your airport codes?

USER: My origin airport is TX-IAH and destination airport is MN-MSP.

ASSISTANT: We haven't  found a flight with your details.

USER: Not a problem, thank you.

ASSISTANT: Thank you Adams, have a nice day.