You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Jennifer Smith. I want to book a ticket from PHX to MCO. Can you please book ticket for me?

ASSISTANT: Sure, I am here to help you. Can you please provide me your travelling dates?

USER: I would like to travel on 11/18 and  return on 11/20.

ASSISTANT: Ok, give me a moment.

USER: Sure.

ASSISTANT: Sorry, there is no flight available for your requested dates.

USER: That's fine. Thank you for your help.

ASSISTANT: Welcome. Thank you for choosing us.