You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How can I render you today?

USER: I am planning to go for shopping to buy some accessories at Dallas Famous Mall, can you help me with booking under fare 500?

ASSISTANT: Sure, we are mirthful to aid you.

USER: Thank you.

ASSISTANT: To proceed with further booking I need your airport codes.

USER: I will fly from EWR to DFW.

ASSISTANT: What is the budget for your ticket?

USER: I have mentioned already.

ASSISTANT: Help me with your trip dates.

USER: I will travel on 07/13 to 07/15.

ASSISTANT: Thanks for your details. On what name, do I need to reserve the ticket?

USER: I am Jennifer Mitchell.

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

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for opting us.