You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sarah Carter.

ASSISTANT: How can I address you?

USER: Address me in booking my flight ticket to HOU in the month of August to attend an exam there and will start my journey from my home town DEN.

ASSISTANT: Sure, I can help you with this.

USER: Thank you for considering my request.

ASSISTANT: Can I know your travelling  dates?

USER: Sure, my travelling dates are 08/30 and 09/01.

ASSISTANT: Do you have any class preference?

USER: No, I am comfortable with any of the class.

ASSISTANT: What is your estimate for buying your ticket?

USER: I can afford 1000 for my journey.

ASSISTANT: Let me check what flights are available for you.

USER: Sure, go ahead with checking.

ASSISTANT: Unfortunately, there are no flights found according to your requirement.

USER: Not an issue with that, anyways thank you for the information.

ASSISTANT: Thank you for contacting us.