You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am Benjamin Robinson. I am planning to attend a Snooker's competition in SFO from PHL. Can you make a reservation for me?

ASSISTANT: Sure, can you please let me know your travelling dates?

USER: Sure, I am planning to travel on these days that is on 06/11 and back on 06/13.

ASSISTANT: Sorry, I could not find any flight with your travel dates.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: My pleasure.