You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello.

USER: I am Thomas Campbell.

ASSISTANT: How best I can provide assistance to you today?

USER: I am planning to visit Arlington national cemetery hop-on hop-off tour in Washington DC - IAD. Can you avail me to book a connecting flight?

ASSISTANT: Sure, I can help you in that.

USER: Thank you.

ASSISTANT: Can you help me by providing your travelling dates?

USER: My trip dates are 09/17 and recur on 09/19.

ASSISTANT: Kindly mention your origin airport?

USER: My origin is from Houston, TX - IAH.

ASSISTANT: Thanks for waiting, flight- 1003, airline- Delta, price- 100 with connection-1 matches your requested details.

USER: Please proceed.

ASSISTANT: Your ticket is reserved in an economy class.

USER: Thanks for your kind service.

ASSISTANT: Thanks for approaching us.