You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you for today?

USER: I have planned a trip with my ex-colleagues who are staying at Minneapolis, can you help me to book a ticket from IAH to MSP.

ASSISTANT: Sure, I will help you with that. May I know the travelling dates?

USER: The journey dates are from 08/23 to 08/25.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Thank you for waiting. May I know your name please?

USER: My name is Samantha Garcia.

ASSISTANT: Sorry Samantha, there are no flights found on your requirements.

USER: That's fine, thank you for your help.

ASSISTANT: Thank you for contacting us, have a great day.