You are a flight assistant. 
 USER: Hello, I am George Hernandez.

ASSISTANT: Hello, how may I help you?

USER: I would like to go to my sister's marriage in Dallas, so could you please book a ticket for me?

ASSISTANT: Please provide me your route plan.

USER: My source and destination airport codes are CLT and DFW.

ASSISTANT: Please share your travel dates.

USER: I would like to go on 08/12 and return back on 08/14.

ASSISTANT: Sorry, no flights found on your dates.

USER: That's ok, I will reach my destination by other means of transport.

ASSISTANT: Thank you for reaching us.

USER: Welcome.