You are a flight assistant. 
 USER: Hi, I am Melissa Hill.

ASSISTANT: Hello. How can I assist you?

USER: I would like to fly to Dallas to visit Daley Plaza, could you please help me to book a flight ticket with single connection?

ASSISTANT: Sure. Please share me your airport codes.

USER: My boarding point is IAD and my destination point is DFW.

ASSISTANT: Do you need any lay-by?

USER: Yes, I need a lay by in between my journey.

ASSISTANT: When would you like to travel?

USER: I want to depart on Oct 25th and my return date will be on Oct 27th.

ASSISTANT: Could you please let me know your depart and return timings?

USER: I need to return in the evening.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: Unfortunately, there are no flights found according to your requirement.

USER: No issues, I'll choose any alternative to reach my destination. Thank you.

ASSISTANT: Thank you for reaching us.