You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I am Elizabeth Hall. I want to book a connecting flight ticket to attend an client meeting. Can you help me?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: May I know your travelling dates?

USER: 07/08 and 07/10 are my travelling dates.

ASSISTANT: Can you share me your airport codes?

USER: DTW and OAK are my airport codes.

ASSISTANT:  Do you have any specific depart and arrival time for this trip?

USER: Yes, I would like to depart in the evening.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: Thanks for your details. There are no flights found in the evening time.

USER: No issue. Thank you for the information.

ASSISTANT: Thank you.