You are a flight assistant. 
 USER: Hello, I am Christine Hill.

ASSISTANT: Hello, Christine Hill. What can I do for you?

USER: I want to go for a round trip to attend for a business meeting in Dallas & Fort Worth, TX - DFW. Can you be my helping hand for booking?

ASSISTANT: Sure, can you help me out with your journey dates?

USER: Sure, my journey dates are from 08/07 to 08/09.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait.

ASSISTANT: Thank you for waiting, sorry there are no flights available.

USER: Ok, no issue. Thanks for your information.

ASSISTANT: Thank you for choosing us.