You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Samuel Gonzalez,w ant to travel from PHl to ORD. Please help me in booking my ticket.

ASSISTANT: Sure, on which dates you are planning to travel?

USER: Sure, my trip dates are from 10/10 to 10/12.

ASSISTANT: Do you have any other requirements?

USER: My depart time will be in morning and my return time will be in evening with 1 connecting flight.

ASSISTANT: If you have any airline preference then please let me know.

USER: Yes, I am looking for normal class flight.

ASSISTANT: Sure, please wait a minute.

USER: Ok.

ASSISTANT: Sorry, we regret to inform you that there is no flight available as per your request.

USER: It's ok, thank you for your help.

ASSISTANT: Most welcome.