You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I am Karen Garcia. I want to book a ticket from DEN to LGA, can you help me?

ASSISTANT: Sure, let me know your airline preference?

USER: I am comfortable with any airline.

ASSISTANT: Please share your travelling dates.

USER: My travel dates are June 07 and June 09.

ASSISTANT: Do you need halt in between your journey?

USER: I am comfortable with any connection limit.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there are no flights available based on your details.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for choosing us.