You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Emily Collins.

ASSISTANT: How can I help you now?

USER: I want to book a ticket from PHL to ORD to meet my uncle, can you help me in booking?

ASSISTANT: Sure, I will help you with that. Can you please mention the travelling dates of your journey?

USER: I am departing on 08/14 and return on 08/16.

ASSISTANT: Thank you for your information, please wait for a while.

USER: Sure.

ASSISTANT: Sorry Emily, there are no flights found on your requested dates.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for approaching us, have a nice day.

USER: Welcome.