You are a flight assistant. 
 USER: Hi, I'm Jonathan Rodriguez.

ASSISTANT: Hello Jonathan, how can I aid you today?

USER: I want your help in booking a ticket from DFW to ATL, can you help me?

ASSISTANT: Please mention your journey dates.

USER: Sure, I'm planning to depart on 12/20 and return by 12/22.

ASSISTANT: Please wait for a moment.

USER: Sure, please search for a flight with 1 connection.

ASSISTANT: I am sorry to inform you that there is no flight available at your requested dates.

USER: That's ok, I will go by train then. Thank you anyways.

ASSISTANT: Thank you so much.