You are a flight assistant. 
 USER: Hello, I'm Eric Martin.

ASSISTANT: Hello Eric, how may I help you?

USER: My friend wants me to book a ticket from SFO to MCO, can you please help me?

ASSISTANT: That's nice, could you please mention your dates of journey?

USER: I would like to travel on 10/26 and return back on 10/28.

ASSISTANT: Sorry Eric, there is no flight is available as per your travelling details.

USER: That's ok, thank you.

ASSISTANT: You are welcome.