You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: Myself Margaret Edwards, I need to schedule my trip to travel Houston this weekend. Can you please help me in reserving the ticket from MSP to HOU?

ASSISTANT: I understand your request and will be happy to help you.Certainly, could you please share your departure and arrival day?

USER: I will drop-off 02/21 and again I will retrieve on 02/23.

ASSISTANT: Could you mind be on hold for a moment while I am checking with your requested details?

USER: Sure, I will wait for your kind response.

ASSISTANT: Sorry, all flight tickets are sold out on your requested travelling dates.

USER: Not a big deal, anyway thank you very much for your kind response.

ASSISTANT: My pleasure. If any questions arise, please feel free to contact us at any time.