You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am George Brown. Can you help me to change my reservation due to an emergency?

ASSISTANT: Sure, will you please give me a moment?

USER: Take your time.

ASSISTANT: Your reservation is found. Please provide your travelling dates.

USER: I am planning to leave SEA to ORD on June 28 and June 30 respectively.

ASSISTANT: Do you have any specifications?

USER: I am looking for direct flight. I will go with normal cost airlines.

ASSISTANT: Do you have any other preferences?

USER: No other preferences, thank you.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there are no flights found under your preferable details.

USER: Thanks for information provided.

ASSISTANT: Welcome, have a great day.