You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I would like to book a ticket from OAK to SEA, can you please help me out?

ASSISTANT: Sure, can you help me with your dates?

USER: I am travelling on these dates Dec 26th and 28th.

ASSISTANT: Do you need any connections?

USER: I need direct flight.

ASSISTANT: Are there any other preferences?

USER: I prefer economy class.

ASSISTANT: May I know your name?

USER: Joshua Campbell here.

ASSISTANT: Sorry, there is no flight found under your details.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for reaching us.