You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Rachel Martin. My sister blessed with a baby, so I need to visit  from DFW to DEN. Can you help me out?

ASSISTANT: To check is there any flight available or not, please share your travel dates?

USER: My journey dates are 10/07 to 10/09.

ASSISTANT: There is flight available to Denver-DEN on 10/07.

USER: Make sure my price limit is 200.

ASSISTANT: The fare is 300 for Southwest airlines. Is it ok for you?

USER: Sorry I don't want to proceed. Thank you for your help.

ASSISTANT: You are welcome.