You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, may I know your name?

USER: Charles Young here.

ASSISTANT: Yes, Charles Young how can I serve you?

USER: Can you help me searching flight with connection 1, to attend my seminar.

ASSISTANT: Sure, when you are planning to go there?

USER: My travel starts at 05/14 and 05/16.

ASSISTANT: Ok, can you please provide me your origin of journey and destination of journey?

USER: My origin code OAK and destination code ATL.

ASSISTANT: Give me a moment.

USER: Ok, I will wait for your reply.

ASSISTANT: Sorry to say this our service will not provide any flights to your preferable destination.

USER: Oh! It's ok, no problem.

ASSISTANT: Ok, thank you for choosing our service.

USER: Thank you for your services.

ASSISTANT: Do you have any other requirements?

USER: No, that's fine.

ASSISTANT: Ok, thank you for contacting us.