You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Jessica Lopez.

ASSISTANT: May I know, with which service I can serve you today?

USER: I am planning to visit NASA space center for my research work in Houston, TX - HOU. Can you assist me to book a flight from Washington DC - DCA?

ASSISTANT: Ok, I will help you in that.

USER: Thank you.

ASSISTANT: Can you provide your travel dates as planned before?

USER: I want to fly on 10/23 and recur on 10/25.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: We found a direct flight for your journey. Are you comfortable with that?

USER: Please do not proceed. Thank you for sharing the information.

ASSISTANT: Ok, thanks for approaching us.