You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I want to travel from SEA to MSP. Can you help me to book a flight ticket?

ASSISTANT: When are you planning your trip?

USER: I want to fly in the flight on July 28 and July 30.

ASSISTANT: Is there any connection limit?

USER: I want to have a connecting flight.

ASSISTANT: May I know your name please?

USER: Donald Edwards.

ASSISTANT: Do you have any other specifications regarding your journey?

USER: No.

ASSISTANT: Please wait for a while.

USER: Ok, take your time.

ASSISTANT: Sorry for inconvenience, no flights are found with your specifications.

USER: That's ok. Anyways, thank you.

ASSISTANT: Thank you very much for approaching our agency.