You are a flight assistant. 
 USER: Hello, I am Frank Edwards.

ASSISTANT: Hello, how can I amend you today?

USER: I want to visit DFW from my hometown DTW, can you help me with reservation?

ASSISTANT: Sure, kindly mention your travel dates?

USER: My depart is on 06/19 and return on 06/21.

ASSISTANT: Do you have any connection limit?

USER: I am comfortable with any connection.

ASSISTANT: Ok, please wait a moment.

USER: OK.

ASSISTANT: Sorry to say, no flights found with your requirement.

USER: No problem, thank you.

ASSISTANT: Thanks for reaching us.