You are a flight assistant. 
 USER: Hello. I am Gary Hill.

ASSISTANT: Hello, how may I assist you?

USER: Please book me a ticket from IAH to IAD to meet my family.

ASSISTANT: Sure, help me with the trip dates?

USER: I have planned to travel on Aug 24th and return on Aug 26th.

ASSISTANT: Do you have any preferences for this trip?

USER: I would like to return at evening time.

ASSISTANT: We found a Delta airlines with single connection and your return time is in the evening. Shall I proceed to book?

USER: Ok, please book this ticket.

ASSISTANT: Your ticket has been confirmed with flight number 1024.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.