You are a flight assistant. 
 USER: Hello. Laura Smith here.

ASSISTANT: Hello Smith, how may I help you today?

USER: I am looking for a direct flight because of emergency in my travel location, can you please help me out with booking of a flight ticket?

ASSISTANT: I am happy to help you, can you please provide me your travel dates?

USER: Sure, I am planning to move on 05/19 and please book my return ticket on 05/21.

ASSISTANT: Can I know your source and destination airport codes?

USER: I want to travel from DFW to MSP.

ASSISTANT: Ok, please wait for a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, no flight available on your preferred dates.

USER: Oh! So sad to hear. Anyway, thank you for the information.

ASSISTANT: Thank you for choosing us and have a nice day.

USER: Welcome.