You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I provide assistance to you?

USER: My name is Edward Mitchell. I would like to book a flight ticket from DEN to SFO, can you please do it for me?

ASSISTANT: Sure, we are mirthful to help you.

USER: Nice to hear that.

ASSISTANT: Kindly mention your travelling dates?

USER: Sure, my planned travelling dates are from 05/07 to 05/09.

ASSISTANT: What is your expected budget for your ticket?

USER: My fare range is 500.

ASSISTANT: Do you need any halt in between journey.

USER: Yes, I need 1 layover.

ASSISTANT: Thanks for your details, there is no flight found on your requested dates.

USER: That's ok, thank you for the information.

ASSISTANT: Thanks for approaching us, have a nice day,.