You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: I want to go for an Yosemite adventure at SFO, can you please book me a ticket from MCO?

ASSISTANT: Sure, Could you please provide your journey dates?

USER: I want to depart on Dec 4th and return on Dec 6th.

ASSISTANT: May I know your good name?

USER: I am Melissa Johnson.

ASSISTANT: Do you have any class preference?

USER: Yes, I want a business class.

ASSISTANT: Is there any other preferences?

USER: I want a single connection in between my journey.

ASSISTANT: Ok, please wait for  a minute.

USER: Ok.

ASSISTANT: Sorry, there are no flights available as per your requirements.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for choosing us.