You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to do some changes in my existing reservation. Can you help me for that?

ASSISTANT: Sure, I will help you. Can you please help me with your name?

USER: My name is Ruth Adams.

ASSISTANT: Thank you. Please wait, let me check your reservation status.

USER: Sure, I will wait for your response.

ASSISTANT: I found your reservation in our database, please tell us your travel dates.

USER: My travelling dates are Mar 26 and Mar 28.

ASSISTANT: Thank you. Please let me know your source and destination airport codes.

USER: My travelling airport codes are EWR to MSP.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I prefer to book a single connecting flight.

ASSISTANT: Are you looking for any other help from my side?

USER: No.

ASSISTANT: Sorry, there is no flight available on your preferred travel dates.

USER: That's ok, thank you for checking.

ASSISTANT: You are most welcome.