You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Will you please book a ticket from Detroit, DTW?

ASSISTANT: Sure, please share me your travelling dates?

USER: I would like to go to Houston, to participate in celebrations of Martin Luther King day. So, please check flights on 01/15. I planned to arrive on 01/17.

ASSISTANT: Kindly mention me your landing airport code?

USER: Houston, HOU is my destination.

ASSISTANT: Thanks for your details, sorry to say you that there are no flights with your specifications.

USER: Ok. I will go with other alternative.

ASSISTANT: Can I know your name for the documentary?

USER: I am Timothy Roberts.

ASSISTANT: Thank you for reaching us.

USER: Thank you.