You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you?

USER: As I am a scientist, I want to attend science festival with my students at Boston.

ASSISTANT: Ok.

USER: Can you do the reservation?

ASSISTANT: Sure, I am here to help you. May I have your planned journey dates?

USER: My trip dates are 02/23 and 02/25.

ASSISTANT: Please, provide the airport codes of your source and destination.

USER: My airport codes are IAH-BOS.

ASSISTANT: Please, standby.

USER: Sure.

ASSISTANT: Thanks for your time, there are no flights available that matches our requirements.

USER: No problem, Thanks for the information.

ASSISTANT: May I know your name please?

USER: Emily Clark here.

ASSISTANT: Thank you for approaching us.