You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Catherine White.

ASSISTANT: How can I help you?

USER: I want to book a ticket from PHL to DFW to attend seminar, can you help me in booking?

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: I am departing on Aug 23 and return on Aug 25.

ASSISTANT: Do you have any connection preference?

USER: I need a flight with connection limit 1.

ASSISTANT: Do you have any class preference?

USER: I am ok with any class.

ASSISTANT: Is  there any other specifications on your trip?

USER: I want to depart in evening.

ASSISTANT: Please stand by.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, Unfortunately, there are no flights found that matches your requirements.

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

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