You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I amend you?

USER: I am Nancy Thompson, I want to book a flight to MN-MSP to visit my friend, can you help me with booking?

ASSISTANT: Sure, may I know your source code?

USER: My source is MN-MSP and destination is TX-DFW.

ASSISTANT: Let me know your travelling dates.

USER: I will fly on 03/10 and return on 03/12.

ASSISTANT: Do you have any connection limit?

USER: I need a single connection flight.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no flight found on your given requirements.

USER: Thank you for the information.

ASSISTANT: Thank you.