You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Christopher Harris. I am planning to meet my friend at Orlando, MCO. Can you please book a ticket from Detroit, DTW?

ASSISTANT: Sure, I am here to help you. May I know your travelling dates please?

USER: Journey dates are 08/28 to 08/30.

ASSISTANT: Ok, can I know how much you can pay for this ticket?

USER: I can afford up to 200.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry no flights found with your details.

USER: No problem.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Thank you.