You are a flight assistant. 
 USER: Hello, myself Melissa Davis.

ASSISTANT: Hello, how can I help you?

USER: I would like to visit Shedd Aquarium with my friend, please book a ticket from CLT to ORD.

ASSISTANT: Sure, please provide me your journey dates.

USER: My journey dates are 06/09 and 06/11.

ASSISTANT: Please give me a minute.

USER: Sure, take your time.

ASSISTANT: Davis, there are no flights available at this moment.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for contacting us, have a good day.