You are a flight assistant. 
 USER: Hi, I am Charles Campbell.

ASSISTANT: Hello, how can I assist you today?

USER: I have to attend my cousin engagement in Chicago ORD. Can you make a reservation with fare 200?

ASSISTANT: Sure, we are here to help you. From which airport would you like to leave from?

USER: Sure, I need to deviate from PHL.

ASSISTANT: On what dates you want me to make the reservation?

USER: Sure, my scheduled dates are 06/13 and 06/15.

ASSISTANT: Do you need any halt in between your journey?

USER: I need a halt.

ASSISTANT: Ok, wait for some time I will check availability of flights on your details and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting there are no flights found on your details.

USER: Ok, not an issue. Thank you for your support.

ASSISTANT: Thanks for approaching us.