You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hi, hope you are having a good day.

USER: Linda Campbell here.

ASSISTANT: Hello, Ms. Campbell. What can I do for you today?

USER: Yes I am, Hope you too. I was suppose to visit Oakland for my business trip from Phoenix. Could  you help me with this?

ASSISTANT: Yes sure. Do you want to book a round trip?

USER: Yes. It would be from Oct 10-12.

ASSISTANT: Okay. Just one moment please.

USER: Take your time.

ASSISTANT: Hello Ms. Campbell. So I could find one seat available on Delta airlines in business class for you. Is that okay?

USER: Could you please check the same with economy?

ASSISTANT: Sure. Just give me one moment. Oh, I'm sorry Ms. Cambell, but they just had that one last seat available for business class. Economy class is full.

USER: Oh alright. No Problem. I would try to contact you tomorrow again. Thanks for your help.

ASSISTANT: Sure. I would keep checking if any seat gets free in economy class for you. Sorry to have misspelled your name earlier. I hope you don't mind that. Thank you for choosing our service. Have a good day.

USER: No Problem. You too.