If your bot is not able to capture the phone number in the form, then there might be the case that the entity phone_number is not capturing the number because either the number is not a 10 digit number, or it might have hyphens in it.
In such rare cases, you can create a local entity and use the following regex pattern in it, for detecting phone numbers -
^([(]?[0-9]{3}[)]?([ ]|[-])[0-9]{3}[-][0-9]{4})|[0-9]{10,13}
This way your bot will be able to capture phone numbers.
If the issue still persists, please connect with our Support team at support@haptik.ai.