You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I want to book a ticket from IAH to MCO. Could you book a ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: Travelling dates are Jan, 31 and Feb, 2.

ASSISTANT: May I know your specifications?

USER: I would like to depart in the morning.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class preference.

ASSISTANT: May I know your name?

USER: My name is Emma Smith.

ASSISTANT: Sorry, there are no flights available on your travelling dates.

USER: Thank you.

ASSISTANT: Thank you for choosing us.