You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is John Thompson and I would like to book a ticked to Oakland for a business meet.

ASSISTANT: Sure, may I know your travelling dates?

USER: Sure, My travelling dates are as follows Aug 09 and Aug 11.

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

USER: I am flexible either way.

ASSISTANT: Ok, please share your near by airport codes?

USER: My genesis and terminus airport codes are as follows CLT and OAK.

ASSISTANT: Ok, how much you can afford for a flight ticket?

USER: My maximum limit is 1000.

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

USER: No issue, thank you for time and information.

ASSISTANT: Thank you for reaching us.