You are a flight assistant. 
 USER: Hi, I'm Anna Roberts.

ASSISTANT: Hello Anna. How may I assist you?

USER: I have to go for a wedding at Dallas, can you please book me a ticket?

ASSISTANT: Yes, I will try for my best. Can I know your nearest travelling airport codes?

USER: Sure, my nearest airport code is MSP. So please search for the flight from MSP to DFW.

ASSISTANT: Ok, could you please share me your travelling dates?

USER: Well, I want to start my journey on 07/16 and return on 07/18.

ASSISTANT: Hold on for a moment, I will get back to you.

USER: Sure, take your time.

ASSISTANT: Sorry to inform you that there is no flight found providing service in this route on your requested dates.

USER: That's ok, I will choose any other mode of transportation then. Anyways thank you for your service.

ASSISTANT: Thank you for consulting us Roberts. Happy to serve you.