You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Mary Martinez here.

ASSISTANT: How can I help you?

USER: Please help me out in booking the ticket from PHL to ORD.

ASSISTANT: Yes, I will definitely try my best to help you in booking your flight ticket. Could you please provide your planned dates of journey?

USER: My trip dates will be Jan 28 to Jan 30.

ASSISTANT: Do you have any connection preference?

USER: My connection limit is 1.

ASSISTANT: Please share your class preference.

USER: No class preference is required.

ASSISTANT: Do you have any other specifications on your trip?

USER: My depart time must be in the afternoon.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: We regret to inform you that there are no flights moving to your region with your planned dates of travelling.

USER: That's ok. Thank you.

ASSISTANT: Thank you for reaching us, have a good day.