You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How can I aid you?

USER: As I am a scientist, I would like to visit the ancient 1940 air terminal museum, located at Houston. Can you help me to book a flight ticket from CLT to IAH?

ASSISTANT: Sure, I am blissful to help you. Kindly mention your travel dates?

USER: I intend to travel on 07/28 and return on 07/30.

ASSISTANT: Is there any restriction on the price?

USER: I do not want to spend more than 200, so the limit is 200.

ASSISTANT: Ok, wait for a minute, I will revert you with the availability.

USER: Ok.

ASSISTANT: We are very sorry to notify you that there is no flight found based on your details.

USER: Ok, not an issue.

ASSISTANT: To proceed further can I know your good name please?

USER: I am Donna Campbell. Thank you for providing the information.

ASSISTANT: Thank you for reaching us, Have a great day.