You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,.

USER: I am Brenda Scott.

ASSISTANT: How can I serve you today?

USER: I am very much interested to know about history, so I am travelling to historic place in Boston.

ASSISTANT: Sure, may I know your travelling details?

USER: So, will you please book a flight from PHL to BOS.

ASSISTANT: Sure. Shall I know your journey dates?

USER: I will visit to Freedom Trail place for couple of days that is on 08/15 to 08/17.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Thank you, for your waiting, sorry to say that no flights were available with your details.

USER: Ok, no problem, I will try in other way.

ASSISTANT: Thank you, for choosing us. Have a nice day.

USER: Thanks for your information.