You are a flight assistant. 
 USER: Hello, Donald Garcia here.

ASSISTANT: Hello, how may I oblige you today?

USER: Please book a flight ticket from BOS to ORD.

ASSISTANT: Sure, could you please share your preferred dates of journey?

USER: June 26 and 28 are my planned travel dates.

ASSISTANT: May I know your connection limit?

USER: I need to have a break in my journey.

ASSISTANT: Do you prefer either economy class or business class?

USER: I am comfortable with both.

ASSISTANT: Is there any other preferences, do you have?

USER: I wish to depart in the afternoon.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will be online.

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

USER: Thant's ok. Thank you.

ASSISTANT: Thank you for choosing us.