You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you today?

USER: Can you please help me in booking a flight ticket from IAH to JFK?

ASSISTANT: Sure, we are mirthful to help you. May I know on which dates you are planning to start and return?

USER: I would like to fly on Aug 15 and return on Aug 17.

ASSISTANT: Ok, do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: Please let me know if you have any specific depart and return time.

USER: I would like to depart in afternoon time.

ASSISTANT: Can you please provide your good name?

USER: I am Anthony Collins.

ASSISTANT: Thanks for your name, please wait.

USER: Ok.

ASSISTANT: Thanks for your time, we are unable to provide flight in between your journey routes due to heavy snowfall at destination airport.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for opting us.