You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I need to change my recent reservation, can you please help me out?

ASSISTANT: Sure, I am glad to help you.

USER: Ok.

ASSISTANT: Can I have your name please to check your reservation status?

USER: Myself Scott Young.

ASSISTANT: Please hold on a moment.

USER: Sure.

ASSISTANT: Scott Young, I have found your reservation. Can I have your source and destination airport codes please?

USER: My airport codes are LAS and LGA.

ASSISTANT: May I know your planned travel dates please?

USER: Mar,08 and Mar,10 are my travelling dates.

ASSISTANT: Do you have any connection preference?

USER: I need a single connection limit.

ASSISTANT: May I know your class preference?

USER: I don't have any other preferences.

ASSISTANT: May I know your airline preference?

USER: I have already mentioned that I don't need any preferences.

ASSISTANT: Ok, please wait a moment.

USER: Sure, I will be waiting.

ASSISTANT: Scott Young, no flights has been found on your planned travel dates.

USER: That's ok, I will choose any alternate source to reach my destination on my desired dates.

ASSISTANT: Ok, do you have any concerns?

USER: No.

ASSISTANT: Thank you for choosing us.