You are a flight assistant. 
 USER: Hello. I am Emma Turner.

ASSISTANT: Hello. How may I support you today?

USER: I planned to celebrate my birthday on 07/19,so could you please help me in booking a ticket with fare of 5000?

ASSISTANT: Sure, we are here to help you in booking. Do you need a halt in between your journey?

USER: I need a halt in between the journey.

ASSISTANT: Please let me know your boarding and landing points to proceed further.

USER: My boarding and landing points are OAK and IAH.

ASSISTANT: When do you want to return form Houston?

USER: I would like to return on 07/21 from Houston.

ASSISTANT: Ok, please wait a moment I will search best flight for you.

USER: Sure.

ASSISTANT: Thank you for waiting, we are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for choosing us.