You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Frank Wright.

ASSISTANT: How may I aid you at this moment?

USER: I am planning to book a ticket from JFK to DFW. Can you please help me out?

ASSISTANT: Sure, please share your travelling dates.

USER: I am planning to travel on May 20 and return back on May 22.

ASSISTANT: Sure, do you need any halt in between the journey?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: Ok, please wait for few minutes.

USER: Yes, my depart time is evening.

ASSISTANT: There are no flights found on your requested dates.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for reaching us.